Journal of Analytical Atomic Spectrometry最新文献

{"title":"A single-stage purification method for the precise determination of zirconium isotopic composition in geological samples by double spike MC-ICP-MS†","authors":"Lanping Feng, Chen Wang, Yan Han, Wen Zhang, Jing-Liang Guo, Lian Zhou and Zhaochu Hu","doi":"10.1039/D4JA00332B","DOIUrl":"https://doi.org/10.1039/D4JA00332B","url":null,"abstract":"<p >Interest in studying zirconium (Zr) stable isotopic fractionation in both low and high-temperature environments has increased significantly in recent years. Multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) is the preferred technique for stable Zr isotope analysis due to its low sample consumption and high precision. However, the multi-column separation steps required to remove interferences and meet the stringent matrix requirements for Zr isotopes during MC-ICP-MS testing typically make the sample preparation process time-consuming. Here, we present a new, simple, and efficient single-pass chromatographic exchange technique for the chemical isolation of Zr from complex sample matrices. This new separation protocol is based on DGA resin and consists of only three elution steps and two types of acid eluents (15 mL 7 mol L<small>⁻¹</small> HNO<small>₃</small> and 5 mL 3 mol L<small>⁻¹</small> HNO<small>₃</small> + 0.1 mol L<small>⁻¹</small> HF), which afford straightforward separation of Zr with high yield, good purity, and low blank levels. Zr isotope ratios were measured using Neptune Plus MC-ICP-MS with the <small>⁹¹</small>Zr–<small>⁹⁶</small>Zr double spike in combination with standard–sample bracketing for mass bias correction. The validity of the proposed method is demonstrated by analyzing eight geological reference materials (including BCR-2, which has an extremely high Mo content of ∼248 μg g<small>⁻¹</small>) with satisfactory results that are in good agreement with published values. Based on repeated analyses of pure standard solutions and geological reference materials, the long-term measurement reproducibility is better than ±0.048‰ for <em>δ</em><small>⁹⁴</small>Zr. Therefore, the proposed method can be used for the rapid and efficient determination of stable Zr isotope ratios in geological samples.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 12","pages":" 3035-3047"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrophobicity induced graphene oxide based dispersive micro solid phase extraction of strontium from seawater and groundwater prior to GFAAS determination","authors":"M. Sebastian, D. Saikrishna, S. K. Jayabun, N. N. Meeravali, R. Shekhar and A. C. Sahayam","doi":"10.1039/D3JA00445G","DOIUrl":"https://doi.org/10.1039/D3JA00445G","url":null,"abstract":"<p >A novel graphene oxide (GO) mediated dispersive micro solid phase extraction method (Dμ-SPE) is developed for the extraction of strontium (Sr) from seawater and groundwater. This method involves the quantitative sorption of Sr<small>²⁺</small> ions from seawater onto the negatively charged surface of GO through electrostatic interactions. Notably, Sr was extracted directly from seawater without altering the inherent composition of the sample. After the sorption of Sr, the excess charge on GO was neutralized by the addition of an electrolyte, KCl. Following charge neutralization, attractive forces between discrete π-electron networks of GO nano-sheets dominate and induce coagulation of GO, forming bulky GO aggregates with partial hydrophobicity. These aggregates were easily extracted into a small organic phase, CCl<small>₄</small>, resulting in the separation and pre-concentration of Sr. The Sr present in the organic phase was back-extracted into dilute nitric acid and quantified using graphite furnace atomic absorption spectrometry (GFAAS). Under optimized conditions, a pre-concentration factor of 100, a limit of detection of 0.004 ng mL<small>⁻¹</small> for 50 mL seawater and recoveries ranging from 88% to 100% at concentrations of 0.2–2 ng mL<small>⁻¹</small> were achieved. The developed method was successfully applied to tap water, groundwater and seawater matrices.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 12","pages":" 3190-3197"},"PeriodicalIF":3.1,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A new concept for correction of instrumental isotopic fractionation in MC-ICP-MS using a pair of monoisotopic elements: a critical evaluation†","authors":"Andrii Tupys, Klaudia Tetfejer, Ludwik Halicz, Ewa Bulska and Jakub Karasiński","doi":"10.1039/D4JA00117F","DOIUrl":"https://doi.org/10.1039/D4JA00117F","url":null,"abstract":"&lt;p &gt;In this research work, we investigated the possibility of using mixtures of monoisotopic elements (&lt;small&gt;&lt;sup&gt;93&lt;/sup&gt;&lt;/small&gt;Nb/&lt;small&gt;&lt;sup&gt;89&lt;/sup&gt;&lt;/small&gt;Y, &lt;small&gt;&lt;sup&gt;165&lt;/sup&gt;&lt;/small&gt;Ho/&lt;small&gt;&lt;sup&gt;159&lt;/sup&gt;&lt;/small&gt;Tb and &lt;small&gt;&lt;sup&gt;209&lt;/sup&gt;&lt;/small&gt;Bi/&lt;small&gt;&lt;sup&gt;197&lt;/sup&gt;&lt;/small&gt;Au) as calibrators for accurate determination of isotope ratios by multicollector mass spectrometry (MC-ICP-MS). The potential advantage of using monoisotopic elements for calibration lies in their significantly lower uncertainty in atomic masses. This would certainly affect the uncertainty of a measured isotope ratio after data processing, particularly if absolute isotope ratios are being evaluated. Model isotopic systems (&lt;small&gt;&lt;sup&gt;87&lt;/sup&gt;&lt;/small&gt;Sr/&lt;small&gt;&lt;sup&gt;86&lt;/sup&gt;&lt;/small&gt;Sr–&lt;small&gt;&lt;sup&gt;93&lt;/sup&gt;&lt;/small&gt;Nb/&lt;small&gt;&lt;sup&gt;89&lt;/sup&gt;&lt;/small&gt;Y, &lt;small&gt;&lt;sup&gt;92&lt;/sup&gt;&lt;/small&gt;Zr/&lt;small&gt;&lt;sup&gt;90&lt;/sup&gt;&lt;/small&gt;Zr–&lt;small&gt;&lt;sup&gt;93&lt;/sup&gt;&lt;/small&gt;Nb/&lt;small&gt;&lt;sup&gt;89&lt;/sup&gt;&lt;/small&gt;Y, &lt;small&gt;&lt;sup&gt;208&lt;/sup&gt;&lt;/small&gt;Pb/&lt;small&gt;&lt;sup&gt;207&lt;/sup&gt;&lt;/small&gt;Pb–&lt;small&gt;&lt;sup&gt;209&lt;/sup&gt;&lt;/small&gt;Bi/&lt;small&gt;&lt;sup&gt;197&lt;/sup&gt;&lt;/small&gt;Au and &lt;small&gt;&lt;sup&gt;167&lt;/sup&gt;&lt;/small&gt;Er/&lt;small&gt;&lt;sup&gt;166&lt;/sup&gt;&lt;/small&gt;Er–&lt;small&gt;&lt;sup&gt;165&lt;/sup&gt;&lt;/small&gt;Ho/&lt;small&gt;&lt;sup&gt;159&lt;/sup&gt;&lt;/small&gt;Tb) were selected and the Internal Standard method (Russell's law) and optimized regression model (ORM) for isotope measurements, using the mentioned mixtures of monoisotopic elements as calibrators, were applied. The precision and trueness of the obtained results were assessed. For example, the &lt;small&gt;&lt;sup&gt;167&lt;/sup&gt;&lt;/small&gt;Er/&lt;small&gt;&lt;sup&gt;166&lt;/sup&gt;&lt;/small&gt;Er isotope ratio in a certified reference material of erbium was measured using a gravimetric mixture of Ho and Tb as well as a &lt;small&gt;&lt;sup&gt;160&lt;/sup&gt;&lt;/small&gt;Gd/&lt;small&gt;&lt;sup&gt;158&lt;/sup&gt;&lt;/small&gt;Gd pair (NRC GADS-1) as instrumental isotopic fractionation (IIF) calibrators in ORM. Although the average result for both approaches was in the range of instrumental error (0.68223 ± 0.00351 with &lt;small&gt;&lt;sup&gt;165&lt;/sup&gt;&lt;/small&gt;Ho/&lt;small&gt;&lt;sup&gt;159&lt;/sup&gt;&lt;/small&gt;Tb and 0.68236 ± 0.00034 with &lt;small&gt;&lt;sup&gt;160&lt;/sup&gt;&lt;/small&gt;Gd/&lt;small&gt;&lt;sup&gt;158&lt;/sup&gt;&lt;/small&gt;Gd), the precision was ten times lower when a mixture of monoisotopic elements was used for correction. Based on the results obtained, it was assessed that Russell's law does not provide a correct description for systems with a mixture of two monoisotopic elements, probably due to the assumption of equal IIF for the analyte and internal calibrator. In our opinion, such an assumption is not true in a system when the internal calibrator is a pair of two different elements. A new mathematical description of such a system could enable the introduction of a suitable correction. The ORM method is free from assumptions about the same IIF for individual chemical entities and for this reason it looks more encouraging and shows the potential to be useable even with a mixture of monoisotopic elements as calibrators. In this paper we present experimental results confirming thi","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 12","pages":" 3142-3150"},"PeriodicalIF":3.1,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ja/d4ja00117f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fundamental studies of laser ablation ICPMS using a nitrogen plasma source and helium, argon and nitrogen as carrier gas†","authors":"Dylan Käser, Ralf Kägi, Bodo Hattendorf and Detlef Günther","doi":"10.1039/D4JA00327F","DOIUrl":"https://doi.org/10.1039/D4JA00327F","url":null,"abstract":"<p >Laser-generated aerosols in helium, argon and nitrogen were directly compared using a nitrogen microwave inductively coupled plasma in combination with a mass spectrometer. An increased surface darkening of the sample was observed during ablation in nitrogen, suggesting a more pronounced particle deposition in comparison to helium, but only 30% lower sensitivities were obtained for nitrogen. Crater depth measurements proved that these variations were not the consequence of a difference in ablation rate (271 ± 17 nm per pulse for He <em>vs.</em> 267 ± 12 nm per pulse for N<small>₂</small>). Particle size measurements and electron microscopy images indicated that the aerosol generated in nitrogen or argon tends to form smaller agglomerates in comparison to helium. This dependence in agglomeration however appeared to be dependent on the ablation cell used. Furthermore, the fluence of the 193 nm laser system used for the experiments significantly influenced the temporal stability of the signals (<em>e.g.</em><small>²³⁸</small>U<small>⁺</small>/<small>²³²</small>Th<small>⁺</small>). Finally, the quantification capabilities of nitrogen as an ablation environment and carrier gas were studied and compared to helium generated aerosols transported in nitrogen. A selection of samples (NIST SRM 612, USGS BCR-2G, USGS GSD-1G and GSE-1G) were quantified using NIST SRM 610 as an external standard. The potential of nitrogen as an alternative carrier gas was highlighted with deviations from the reference values calculated between −13% and +16% in comparison to the deviations between −15% and +17% obtained with helium in a cylindrical ablation cell for most elements in the different reference materials analyzed.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 12","pages":" 3069-3081"},"PeriodicalIF":3.1,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ja/d4ja00327f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Robust determination of low Ti contents in zircon using LA–ICP–MS/MS with NH3 reaction gas†","authors":"Junlong Niu, Shitou Wu, Yueheng Yang, Hao Wang, Chao Huang, Lei Xu and Liewen Xie","doi":"10.1039/D4JA00304G","DOIUrl":"https://doi.org/10.1039/D4JA00304G","url":null,"abstract":"<p >The Ti-in-zircon thermometer is widely used in geoscience for constraining the temperatures of geological settings. Precise and accurate determination of Ti contents (∼1–10 μg g<small>⁻¹</small>) in zircon is a prerequisite for the application of this thermometer; however, traditional laser ablation–single quadrupole–inductively coupled plasma–mass spectrometry (LA–SQ–ICP–MS) analysis of Ti contents in zircon is challenging due to the low abundance of the interference-free isotope of <small>⁴⁹</small>Ti (isotope abundance: 5.51%), resulting in poor precision (&gt;30%, 2RSD), in particular for the high spatial resolution (laser spot size &lt;20 μm) analysis. We have developed a robust technique for determining low Ti contents in zircon using LA–ICP–MS/MS with NH<small>₃</small> as the reaction gas. Using an iCAP TQ ICP–MS/MS instrument (Thermo Scientific, USA), high-purity NH<small>₃</small> was a more effective reaction gas than the commonly used 1 : 9 NH<small>₃</small> : He mixture gas, and a three-fold improvement in sensitivity was achieved using an N<small>₂</small> flow rate of 5.0 mL min<small>⁻¹</small>. The reaction products of Ti, Ca, and Zr with NH<small>₃</small> were identified over a mass range of 40 to 160 amu. The reaction product <small>⁴⁸</small>Ti(<small>¹⁴</small>N<small>¹</small>H)(<small>¹⁴</small>N<small>¹</small>H<small>₃</small>)<small>₄</small> (a mass shift of +83, expressed as <small>^(48+83)</small>Ti) was measured to separate <small>⁴⁸</small>Ti<small>⁺</small> from <small>⁴⁸</small>Ca<small>⁺</small> and <small>⁹⁶</small>Zr<small>²⁺</small>. Interfering ions <small>⁴⁸</small>Ca<small>⁺</small> and <small>⁹⁶</small>Zr<small>²⁺</small> have low reaction rates (∼0.0046% and ∼0.07%) at a mass shift of +83, and corrections are not required for glass reference materials and zircon samples. Five zircon reference materials with Ti contents of 2.5–5.0 μg g<small>⁻¹</small> were analysed, and the analytical precision was better than 10%. Compared with the single quadrupole (SQ) mode, our method is more robust for determining low Ti contents in zircon at high spatial resolutions (laser spot size &lt;20 μm), making it useful for the analysis of complex zircon grains, <em>e.g.</em>, metamorphic zircon.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 12","pages":" 3060-3068"},"PeriodicalIF":3.1,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Combined enhancement of fiber-optic laser-induced breakdown spectroscopy coupling spatial confinement and double-pulse irradiation†","authors":"Yan Qiu, Jinghui Li, Bowen Lu, Jian Wu, Xinyu Guo, Yuhua Hang, Yongdong Li and Xingwen Li","doi":"10.1039/D4JA00291A","DOIUrl":"https://doi.org/10.1039/D4JA00291A","url":null,"abstract":"<p >The mechanism of double-pulse laser irradiation under spatial confinement remains unclear due to complex plasma plume dynamics and multiple shock wave interactions. In this study, coupling of spatial confinement and double-pulse irradiation was investigated using fast photography, laser shadowgraphy, and spectroscopy. The experimental results demonstrated unique dynamic processes of plasma plume and shock waves, confirming that the plasma plume was eventually reshaped into a jet-like structure, and the combined enhancement effect can be regulated through different parameters, including inter-pulse delay and plate spacing. The inter-pulse delay dictates the primary mechanism of the secondary pulse's interaction with the initial plasma and the target surface; as it increases, plasma front absorption decreases while target surface ablation intensifies. Plate spacing determines the delay from laser incidence to plasma plume compression; along with the inter-pulse delay, it influences whether the secondary pulse generates a second-generation shock wave that merges with the initial shock wave for compression or performs a secondary compression after the first. Compared to double-pulse irradiation alone, combined enhancement increased emission intensity of Fe, Ni, and C spectra by up to 4.1 times accompanied by the increase in plasma temperature. The <em>R</em><small>²</small> of calibration curves was increased, and the sensitivity for trace components Cr and C was improved with limits of detection reaching 255 and 659 ppm.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 12","pages":" 3048-3059"},"PeriodicalIF":3.1,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fast analysis of metal components in coal dust using spark emission spectroscopy","authors":"Jialin Li, Jing Huang, Lina Zheng, Shakila Naz and Xutong Liu","doi":"10.1039/D4JA00322E","DOIUrl":"https://doi.org/10.1039/D4JA00322E","url":null,"abstract":"<p >In this study, we utilized spark emission spectroscopy to develop a fast analysis technique for identifying the concentration of metal components in airborne coal dust. Quantitative measurements of Al, Si, Fe, Ca, and Ti elements in lignite, bituminous coal, and anthracite were conducted. Calibration models were built under both variable concentration and fixed concentration conditions. The <em>R</em><small>²</small> values of all calibration curves were approximately 0.90. Except for Si in lignite, the limits of detection (LODs) of other measured elements were within 4 μg m<small>⁻³</small>, with a sampling time of 10 minutes. Comparative analysis with the reference method revealed normalized root mean square error (NRMSE) concentrations of 9.1%, 9.8%, 10.7%, 24%, and 8.2% for various elements in lignite. Additionally, principal component analysis (PCA) was employed to categorize coal samples, confirming the method's capability to distinguish coal dust types. This shows the effectiveness of spark emission spectroscopy in coal dust composition analysis, demonstrating high sensitivity and efficiency.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 12","pages":" 3171-3179"},"PeriodicalIF":3.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A miniaturized microplasma excitation source coupled with photochemically induced volatile species generation as a cost-effective tool for in situ mercury pollution analyses †","authors":"Tymoteusz Klis, Pawel Pohl, Anna Dzimitrowicz and Piotr Jamroz","doi":"10.1039/D4JA00306C","DOIUrl":"https://doi.org/10.1039/D4JA00306C","url":null,"abstract":"<p >A new portable miniaturized atmospheric microplasma discharge (μAPD) system coupled with the optical emission spectrometry (OES) detection for the determination of Hg in water samples was developed. The device was built from cheap, easily replaceable, and commercially available parts and was able to work with the photo-induced chemical vapor generation (PCVG). To optimize the photochemical volatile Hg generation process, a wide range of low molecular weight organic compounds (LMWOCs), namely formic, oxalic, acetic, propionic, and malonic acids, in addition to methanol, ethanol, glycerin, ethylene glycol, formaldehyde, and acetaldehyde, were tested to establish their influence on the signal of Hg. To assess the excitation and atomization potential of the newly developed μAPD system and its impact on the analytical performance of this microplasma excitation source, the plasma temperatures and the electron number density were evaluated. The analytical figures of merit were determined for the coupled PCVG-μAPD system. Additionally, the usability of the method was tested in reference to the analysis of selected environmental samples, <em>i.e.</em>, tap, well, and river water spiked with Hg. A recovery test was also performed to evaluate the accuracy of the method. The examined analytical system allowed to detect Hg in water at a level lower than 0.33 μg L<small>⁻¹</small> when operating it at relatively low sample flow rates (2 mL min<small>⁻¹</small>) and Ar supporting and plasma forming gas rates (20 mL min<small>⁻¹</small>). The precision of measurements was better than 5% for formic acid. We believe that the presented system might be an attractive, cheaper alternative to commercial, highly expensive systems, <em>e.g.</em> based on inductively coupled plasma optical emission spectrometry (ICP OES).</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 12","pages":" 2982-2991"},"PeriodicalIF":3.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ja/d4ja00306c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of miniaturized ultrasonic nebulization for high-efficiency sampling in characterization of silver nanoparticles by single particle inductively coupled plasma mass spectrometry†","authors":"Junhang Dong, Zhenli Zhu, Lujie Li, Pengju Xing, Shuyang Li, Lei Ouyang, Xing Liu, Wei Guo, Hongtao Zheng and Rong Qian","doi":"10.1039/D4JA00320A","DOIUrl":"https://doi.org/10.1039/D4JA00320A","url":null,"abstract":"<p >Single particle inductively coupled plasma mass spectrometry (spICP-MS) has become a powerful tool for the simultaneous characterization of the size, elemental composition and concentration of nanoparticles (NPs). However, the conventional pneumatic nebulization (PN) sampling system used in spICP-MS suffers from low transport efficiency (1–5%), limiting its effectiveness in analyzing environmentally relevant samples with low NP concentrations. To address this limitation, we evaluated a self-designed high-efficiency miniaturized ultrasonic nebulization (MUN) sampling system for spICP-MS analysis. This novel sampling system achieves an exceptionally high transport efficiency of approximately 80% for silver (Ag) NPs. Remarkably, this high transport efficiency is maintained across a sample uptake rate range of 10–25 μL min<small>⁻¹</small>, outperforming other reported highly efficient nebulizers where TE significantly decreased with the increase in sampling rate. The effectiveness and reliability of the MUN system were further demonstrated by analyzing standard Ag NPs of 60 nm and 100 nm, confirming the accurate characterization of particle size distribution. Overall, our MUN-spICP-MS offers a cost-effective and highly efficient method for characterizing NPs, which is of great significance for the NP characterization in natural environmental samples with low particle sizes and concentrations.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 11","pages":" 2791-2798"},"PeriodicalIF":3.1,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Atomic spectrometry update: review of advances in the analysis of metals, chemicals and materials","authors":"Eduardo Bolea-Fernandez, Robert Clough, Andy Fisher, Bridget Gibson and Ben Russell","doi":"10.1039/D4JA90052A","DOIUrl":"https://doi.org/10.1039/D4JA90052A","url":null,"abstract":"<p >This update covers the literature published between approximately June 2023 and April 2024 and is the latest part of a series of annual reviews. It is designed to provide the reader with an overview of the current state of the art with respect to the atomic spectrometric analysis of various metals, chemicals and materials. Data processing appears to be the hottest topic in many of the areas. This is especially true for LIBS and (TOF)-SIMS, where huge amounts of data can be acquired. Methods have been used to decrease the dimensions of the data whilst still retaining the most important information. This can then be input into a machine-learning algorithm so that the provenance of a sample, the sample type, or, in the case of TOF-SIMS data, a clear characterisation of the surface of the sample can be obtained while using less computing power and less processing time. Although these algorithms have been used for some years, their use is expanding into new areas. Another development is the combination of complementary techniques on the same instrument platform. This enables data from the two techniques to be obtained simultaneously and from the same spot on the sample. With regard to the different analytical techniques used, LIBS is continuing to increase in popularity, bolstering its reputation as being the rising superstar of the analytical world.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 11","pages":" 2617-2693"},"PeriodicalIF":3.1,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}