Journal of Automated Methods & Management in Chemistry最新文献_第6页

Abstracts of papers presented at the 2007 pittsburgh conference. 2007年匹兹堡会议论文摘要。

Journal of Automated Methods & Management in Chemistry Pub Date : 2007-01-01 DOI: 10.1155/2007/71943

Peter B Stockwell

引用次数: 4

Simultaneous Determination of Cobalt(II) and Nickel(II) by Fourth-Order Derivative Spectrophotometric Method Using 2-Hydroxy-3-Methoxy Benzaldehyde Thiosemicarbazone. 2-羟基-3-甲氧基苯甲醛硫代氨基脲四阶导数分光光度法同时测定钴(II)和镍(II)

Journal of Automated Methods & Management in Chemistry Pub Date : 2007-01-01 DOI: 10.1155/2007/48768

A Praveen Kumar, P Raveendra Reddy, V Krishna Reddy

{"title":"Simultaneous Determination of Cobalt(II) and Nickel(II) by Fourth-Order Derivative Spectrophotometric Method Using 2-Hydroxy-3-Methoxy Benzaldehyde Thiosemicarbazone.","authors":"A Praveen Kumar, P Raveendra Reddy, V Krishna Reddy","doi":"10.1155/2007/48768","DOIUrl":"https://doi.org/10.1155/2007/48768","url":null,"abstract":"A simple and new simultaneous fourth derivative spectrophotometric method is proposed for the analysis of a two-component system containing cobalt(II) and nickel(II) without separation using 2-hydroxy-3-methoxy benzaldehyde thiosemicarbazone (HMBATSC) as a chromophoric reagent. The reagent reacts with cobalt(II) and nickel(II) at pH 6.0, forming soluble brown and yellow colored species, respectively. Cobalt(II) and nickel(II) present in themixture are simultaneously determined without solving the simultaneous equations bymeasuring the fourth derivative amplitudes at 468.5 nm and 474.5 nm, respectively. The derivative amplitudes obey Beer's law at 468.5 nm and 474.5 nm for Co(II) and Ni(II) in the range 0.059-3.299 mug mL(-1) and 0.058-3.285 mug mL(-1) respectively. A large number of foreign ions do not interfere in the present method. The present simultaneous method is used for the determination of micro amounts of cobalt in biological samples, nickel in plant samples, and in some alloy steels and soil sample.","PeriodicalId":15248,"journal":{"name":"Journal of Automated Methods & Management in Chemistry","volume":"2007 ","pages":"48768"},"PeriodicalIF":0.0,"publicationDate":"2007-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2007/48768","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"26864963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

The application of resonance light scattering technique for the determination of tinidazole in drugs. 共振光散射技术在药物中替硝唑含量测定中的应用。

Journal of Automated Methods & Management in Chemistry Pub Date : 2007-01-01 DOI: 10.1155/2007/86857

Xin Yu Jiang, Xiao Qing Chen, Zheng Dong, Ming Xu

引用次数: 17

Using sequential injection analysis to improve system and data reliability of online methods: determination of ammonium and phosphate in coastal waters. 应用序次注射分析提高近岸水体中铵、磷酸盐在线测定方法的系统和数据可靠性。

Journal of Automated Methods & Management in Chemistry Pub Date : 2007-01-01 DOI: 10.1155/2007/49535

Carsten Frank, Friedhelm Schroeder

引用次数: 15

Fuzzy clustering neural networks for real-time odor recognition system. 基于模糊聚类神经网络的实时气味识别系统。

Journal of Automated Methods & Management in Chemistry Pub Date : 2007-01-01 DOI: 10.1155/2007/38405

Bekir Karlık, Kemal Yüksek

引用次数: 13

Studies on the effects of certain soil properties on the biodegradation of oils determined by the manometric respirometric method. 用压力呼吸法研究土壤性质对油脂生物降解的影响。

Journal of Automated Methods & Management in Chemistry Pub Date : 2007-01-01 DOI: 10.1155/2007/34601

Juhani Kaakinen, Pekka Vähäoja, Toivo Kuokkanen, Katri Roppola

{"title":"Studies on the effects of certain soil properties on the biodegradation of oils determined by the manometric respirometric method.","authors":"Juhani Kaakinen, Pekka Vähäoja, Toivo Kuokkanen, Katri Roppola","doi":"10.1155/2007/34601","DOIUrl":"https://doi.org/10.1155/2007/34601","url":null,"abstract":"The biodegradability of certain biofuels was studied in the case of forest soils using the manometric respirometric technique, which was proved to be very suitable for untreated, fertilized as well as pH adjusted soils. Experiments carried out in infertile sandy forest soil gave a BOD/ThOD value of 45.1% for a typical model substance, that is, sodium benzoate after a period of 30 days and mineral addition improved the BOD/ThOD value to a value of 76.2%. Rapeseed oil-based chain oil almost did not biodegrade at all in 30 days in nonprocessed soil, and when pH was adjusted to 8.0, the BOD/ThOD value increased slightly to a value of 7.4%. Mineral addition improved the BOD/ThOD value on average to 43.2% after 30 days. The combined mineral addition and pH adjustment together increased the BOD/ThOD value to 75.8% in 30 days. The observations were similar with a rapeseed oil-based lubricating oil: after 30 days, the BOD/ThOD value increased from 5.9% to an average value of 51.9%, when the pH and mineral concentrations of the soil were optimized. The mineral addition and pH adjustment also improved the precision of the measurements significantly.","PeriodicalId":15248,"journal":{"name":"Journal of Automated Methods & Management in Chemistry","volume":"2007 ","pages":"34601"},"PeriodicalIF":0.0,"publicationDate":"2007-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2007/34601","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"27263809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

Application of pneumatic flow injection-tandem spectrometer system for chromium speciation. 将气动流动注射-串联光谱仪系统应用于铬含量测定。

Journal of Automated Methods & Management in Chemistry Pub Date : 2007-01-01 DOI: 10.1155/2007/34373

Meissam Noroozifar, Mozhgan Khorasani-Motlagh, Reza Akbari

引用次数: 0

Experimental design optimization of a sequential injection method for promazine assay in bulk and pharmaceutical formulations. 原料药和制剂中丙嗪测定顺序注射方法的实验设计优化。

Journal of Automated Methods & Management in Chemistry Pub Date : 2007-01-01 DOI: 10.1155/2007/32470

Abubakr M Idris, Fahad N Assubaie, Salah M Sultan

{"title":"Experimental design optimization of a sequential injection method for promazine assay in bulk and pharmaceutical formulations.","authors":"Abubakr M Idris, Fahad N Assubaie, Salah M Sultan","doi":"10.1155/2007/32470","DOIUrl":"https://doi.org/10.1155/2007/32470","url":null,"abstract":"Experimental design optimization approach was utilized to develop a sequential injection analysis (SIA) method for promazine assay in bulk and pharmaceutical formulations. The method was based on the oxidation of promazine by Ce(IV) in sulfuric acidic media resulting in a spectrophotometrically detectable species at 512 nm. A 3(3) full factorial design and response surface methods were applied to optimize experimental conditions potentially controlling the analysis. The optimum conditions obtained were 1.0 x 10(-4) M sulphuric acid, 0.01 M Ce(IV), and 10 muL/s flow rate. Good analytical parameters were obtained including range of linearity 1-150 mug/mL, linearity with correlation coefficient 0.9997, accuracy with mean recovery 98.2%, repeatability with RSD 1.4% (n = 7 consequent injections), intermediate precision with RSD 2.1% (n = 5 runs over a week), limits of detection 0.34 mug/mL, limits of quantification 0.93 mug/mL, and sampling frequency 23 samples/h. The obtained results were realized by the British Pharmacopoeia method and comparable results were obtained. The provided SIA method enjoys the advantages of the technique with respect to rapidity, reagent/sample saving, and safety in solution handling and to the environment.","PeriodicalId":15248,"journal":{"name":"Journal of Automated Methods & Management in Chemistry","volume":"2007 ","pages":"32470"},"PeriodicalIF":0.0,"publicationDate":"2007-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2007/32470","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"27329872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

A full automatic device for sampling small solution volumes in photometric titration procedure based on multicommuted flow system. 一种基于多换向流系统的光度滴定过程中小体积溶液取样的全自动装置。

Journal of Automated Methods & Management in Chemistry Pub Date : 2007-01-01 DOI: 10.1155/2007/46219

Sivanildo S Borges, Gláucia P Vieira, Boaventura F Reis

{"title":"A full automatic device for sampling small solution volumes in photometric titration procedure based on multicommuted flow system.","authors":"Sivanildo S Borges, Gláucia P Vieira, Boaventura F Reis","doi":"10.1155/2007/46219","DOIUrl":"https://doi.org/10.1155/2007/46219","url":null,"abstract":"In this work, an automatic device to deliver titrant solution into a titration chamber with the ability to determine the dispensed volume of solution, with good precision independent of both elapsed time and flow rate, is proposed. A glass tube maintained at the vertical position was employed as a container for the titrant solution. Electronic devices were coupled to the glass tube in order to control its filling with titrant solution, as well as the stepwise solution delivering into the titration chamber. The detection of the titration end point was performed employing a photometer designed using a green LED (lambda=545 nm) and a phototransistor. The titration flow system comprised three-way solenoid valves, which were assembled to allow that the steps comprising the solution container loading and the titration run were carried out automatically. The device for the solution volume determination was designed employing an infrared LED (lambda=930 nm) and a photodiode. When solution volume delivered from proposed device was within the range of 5 to 105 mul, a linear relationship (R = 0.999) between the delivered volumes and the generated potential difference was achieved. The usefulness of the proposed device was proved performing photometric titration of hydrochloric acid solution with a standardized sodium hydroxide solution and using phenolphthalein as an external indicator. The achieved results presented relative standard deviation of 1.5%.","PeriodicalId":15248,"journal":{"name":"Journal of Automated Methods & Management in Chemistry","volume":"2007 ","pages":"46219"},"PeriodicalIF":0.0,"publicationDate":"2007-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2007/46219","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"27301881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A homemade autosampler/injector commutator for flow injection analysis. 用于流动注射分析的自制自动进样器/进样器换向器。

Journal of Automated Methods & Management in Chemistry Pub Date : 2006-01-01 DOI: 10.1155/JAMMC/2006/42987

Eduardo Costa de Figueiredo, Leandro Ruela de Souza, Cristiana Schmidt de Magalhães, Célio Wisniewski, Pedro Orival Luccas

引用次数: 6