Journal of Automated Methods & Management in Chemistry最新文献_第10页

High-resolution laboratory lysimeter for automated sampling of tracers through a 0.5 m soil block. 高分辨率实验室溶析仪，用于通过0.5 m土壤块自动采样示踪剂。

Journal of Automated Methods & Management in Chemistry Pub Date : 2003-01-01 DOI: 10.1155/S1463924603000075

A Johnson, T J Mathews, G P Matthews, D Patel, P J Worsfold, K N Andrew

{"title":"High-resolution laboratory lysimeter for automated sampling of tracers through a 0.5 m soil block.","authors":"A Johnson, T J Mathews, G P Matthews, D Patel, P J Worsfold, K N Andrew","doi":"10.1155/S1463924603000075","DOIUrl":"https://doi.org/10.1155/S1463924603000075","url":null,"abstract":"A computer-controlled, automated sample collection from a 0.5-m lysimeter, designed to give superior temporal and spatial resolution for monitoring the movement of chemical tracers through a large undisturbed soil block, is described. The soil block, 0.5 x 0.5 x 0.5 m, was monitored for saturation using eight time domain reflectometry probes. Rainfall was applied at approximately 1600 ml h(-1) using a 12212 array of 23-gauge (0.318 mm internal diameter) hypodermic needles. Soil leachates were collected at the base of the soil block using a machined aluminium collection plate with a 10 x 10 grid of funnels that passed leachates to sample collection palettes. Sample collection was automated using a personal computer equipped with National Instruments LabVIEW software and linked to sensors for palette tracking. The automation of the lysimeter allowed sample collection and storage over a user-defined period with no human interaction. As an example of the use of the automated lysimeter, results show the distribution of phosphate within the soil. The eluted phosphate showed an initial and secondary peak, and only emerged from preferential flow channels.","PeriodicalId":15248,"journal":{"name":"Journal of Automated Methods & Management in Chemistry","volume":"25 2","pages":"43-9"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/S1463924603000075","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"27794722","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: 4

Development of a photometric system for continuous flow analysis. 连续流分析光度测定系统的研制。

Journal of Automated Methods & Management in Chemistry Pub Date : 2003-01-01 DOI: 10.1155/S1463924603000087

S S Randhawa, Baban K S Bansod, Anirudh K Singh, G Chand, A K Ganju

引用次数: 1

Automatic flow system for simultaneous determination of iron and chromium in steel alloys employing photometers based on LEDs as radiation source. 以led为辐射源的光度计同时测定钢合金中铁和铬的自动流动系统。

Journal of Automated Methods & Management in Chemistry Pub Date : 2003-01-01 DOI: 10.1155/S1463924603000014

Ridvan N Fernandes, Boaventura F Reis, Luís Fernando P Campos

{"title":"Automatic flow system for simultaneous determination of iron and chromium in steel alloys employing photometers based on LEDs as radiation source.","authors":"Ridvan N Fernandes, Boaventura F Reis, Luís Fernando P Campos","doi":"10.1155/S1463924603000014","DOIUrl":"https://doi.org/10.1155/S1463924603000014","url":null,"abstract":"A multicommutated flow system for simultaneous determination of iron and chromium in steel alloys by photometry is described. The flow network consisted of an automatic injector and four solenoid valves assembled to form two independent analytical pathways, each one comprising reaction coils and a flow cell. The light source (LED) and detector (photodiode) were attached to the flow cells to form a compact unit. The flow system was microcomputer controlled by Quick BASIC 4.5 software, which carried out all steps of the analytical procedure. The feasibility of the system was proved by the determination of iron and chromium in steel alloys and its accuracy was accessed by comparing results with those obtained by plasma atomic emission spectrometry (ICP-AES). No significant difference at the 95% confidence level was observed. Other profitable features such as low reagent consumption (0.33 mg 1,10-phenantroline and 0.03 mg 1,5-diphenylcarbazide per determination); relative standard deviations (n = 5) of 0.4% for iron and 1.2% for chromium; and an analytical throughput of 160 determinations per h were also achieved.","PeriodicalId":15248,"journal":{"name":"Journal of Automated Methods & Management in Chemistry","volume":"25 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/S1463924603000014","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"27795263","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: 8

Evaluation of the automatic ELISA Triturus analyser. 全自动酶联免疫吸附法麸质酵母菌分析仪的评价。

Journal of Automated Methods & Management in Chemistry Pub Date : 2003-01-01 DOI: 10.1155/S1463924603000051

S Blanco, J Domínguez, O Jiménez, D Sánchez, N Galí, L Matas, V Ausina, R Galimany

{"title":"Evaluation of the automatic ELISA Triturus analyser.","authors":"S Blanco, J Domínguez, O Jiménez, D Sánchez, N Galí, L Matas, V Ausina, R Galimany","doi":"10.1155/S1463924603000051","DOIUrl":"https://doi.org/10.1155/S1463924603000051","url":null,"abstract":"The objective was to evaluate the automatic ELISA Triturus analyser in order to assess its practicability and imprecision. The analyser was evaluated according to the guidelines of the Spanish Society of Clinical Chemistry. The evaluation was performed in two steps: evaluation of the imprecision and the inaccuracy of a semiquantitative and qualitative technique, and study of the practicability. The within-run imprecision rate ranged from 8.9 (VC) to 10.2% (VC) for the semiquantitative test, and from 11 (VC) to 17.2% (VC) for the qualitative one. The between-run imprecision rate ranged from 6 (VC) to 9.7% (VC) for the semiquantitative test, and from 8.8 (VC) to 18% (VC) for the qualitative technique. No sample-related carryover was detected in negative samples. The relative inaccuracy was correct for both techniques. Non-specific binding caused by waste products from the analysed circuits was not detected. The Triturus analyser is a reliable open analytical system with a considerable working capability, rendering this apparatus adequate for conventional laboratories with a medium-to-high work charge.","PeriodicalId":15248,"journal":{"name":"Journal of Automated Methods & Management in Chemistry","volume":"25 2","pages":"31-4"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/S1463924603000051","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"27794720","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: 1

Multicommuted flow system for the determination of glucose in animal blood serum exploiting enzymatic reaction and chemiluminescence detection. 利用酶促反应和化学发光法测定动物血清中葡萄糖的多换流系统。

Journal of Automated Methods & Management in Chemistry Pub Date : 2003-01-01 DOI: 10.1155/S1463924603000191

Cherrine K Pires, Patrícia B Martelli, Boaventura F Reis, José L F C Lima, Maria Lúcia M F S Saraiva

{"title":"Multicommuted flow system for the determination of glucose in animal blood serum exploiting enzymatic reaction and chemiluminescence detection.","authors":"Cherrine K Pires, Patrícia B Martelli, Boaventura F Reis, José L F C Lima, Maria Lúcia M F S Saraiva","doi":"10.1155/S1463924603000191","DOIUrl":"https://doi.org/10.1155/S1463924603000191","url":null,"abstract":"An automatic flow procedure based on multicommutation dedicated for the determination of glucose in animal blood serum using glucose oxidase with chemiluminescence detection is described. The flow manifold consisted of a set of three-way solenoid valves assembled to implement multicommutation. A microcomputer furnished with an electronic interface and software written in Quick BASIC 4.5 controlled the manifold and performed data acquisition. Glucose oxidase was immobilized on porous silica beads (glass aminopropyl) and packed in a minicolumn (15 x 5 mm). The procedure was based on the enzymatic degradation of glucose, producing hydrogen peroxide, which oxidized luminol in the presence of hexacyanoferrate(III), causing the chemiluminescence. The system was tested by analysing a set of serum animal samples without previous treatment. Results were in agreement with those obtained with the conventional method (LABTEST Kit) at the 95% confidence level. The detection limit and variation coefficient were estimated as 12.0 mg l(-1) (99.7% confidence level) and 3.5% (n = 20), respectively. The sampling rate was about 60 determinations h(-1) with sample concentrations ranging from 50 to 600 mg l(-1) glucose. The consumptions of serum sample, hexacyanoferrate(III) and luminol were 46 microl, 10.0 mg and 0.2 mg/determination, respectively.","PeriodicalId":15248,"journal":{"name":"Journal of Automated Methods & Management in Chemistry","volume":"25 5","pages":"109-14"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/S1463924603000191","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"27795245","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: 8

CTAD as a universal anticoagulant. CTAD作为一种通用抗凝剂。

Journal of Automated Methods & Management in Chemistry Pub Date : 2003-01-01 DOI: 10.1155/S1463924603000038

M Yokota, N Tatsumi, I Tsuda, T Nishioka, T Takubo

引用次数: 14

Statistical method for the determination of equivalence of automated test procedures. 测定自动化试验程序等效性的统计方法。

Journal of Automated Methods & Management in Chemistry Pub Date : 2003-01-01 DOI: 10.1155/S146392460300021X

K Rick Lung, Mary A Gorko, Jennifer Llewelyn, Norman Wiggins

引用次数: 24

Quality control material for plasma fibrinogen test produced from purified human fibrinogen. 用纯化的人纤维蛋白原制备血浆纤维蛋白原试验的质量控制材料。

Journal of Automated Methods & Management in Chemistry Pub Date : 2003-01-01 DOI: 10.1155/S1463924603000142

Masahiro Okuda, Yahiro Uemura, Noriyuki Tatsumi

{"title":"Quality control material for plasma fibrinogen test produced from purified human fibrinogen.","authors":"Masahiro Okuda, Yahiro Uemura, Noriyuki Tatsumi","doi":"10.1155/S1463924603000142","DOIUrl":"https://doi.org/10.1155/S1463924603000142","url":null,"abstract":"Plasma fibrinogen measurement is a routine laboratory procedure commonly performed on automated coagulation analysers. Its determination is quantitative, not quantitative. Yet, a lack of precision has been an issue for fibrinogen measurement. A control material derived from plasma comprises many proteins, inhibitors and fatty acids, any or all of which can interfere in the fibrinogen assay. This study has attempted to develop a quality control material using purified human fibrinogen and has compared measurement precision between both purified and plasma materials. Purified fibrinogen was prepared using Cohn fraction 1 and glycine precipitation. Purified fibrinogen clottability was greater than 95%, with no main plasma proteins, lipids or fibrinogen degradation products observed. Two purified control materials were lyophilized at normal (2.30 g l(-1)) and abnormal (1.20 g l(-1)) levels of fibrinogen concentration. Precision was evaluated using a liquid-type reagent, Thrombocheck Fib(L), on automated coagulation analysers. Coefficient of variation for within-run, intraday and between-day precision of the purified materials was 0.7-3.5%. In comparison, the coefficient of variation for plasma materials ranged from 1.2 to 5.3%. These results suggest that materials prepared from purified fibrinogen can be useful to laboratory quality control by improving overall precision of fibrinogen measurement and are applicable to automated coagulation analysers.","PeriodicalId":15248,"journal":{"name":"Journal of Automated Methods & Management in Chemistry","volume":"25 4","pages":"79-85"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/S1463924603000142","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"27794724","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: 5

Monte Carlo simulation for the prediction of precision of absorbance measurements with a miniature CCD spectrometer. 微型CCD光谱仪吸光度测量精度的蒙特卡罗模拟预测。

Journal of Automated Methods & Management in Chemistry Pub Date : 2003-01-01 DOI: 10.1155/S1463924603000063

E P Tsaousoglou, S D Bolis, C E Efstathiou

{"title":"Monte Carlo simulation for the prediction of precision of absorbance measurements with a miniature CCD spectrometer.","authors":"E P Tsaousoglou, S D Bolis, C E Efstathiou","doi":"10.1155/S1463924603000063","DOIUrl":"https://doi.org/10.1155/S1463924603000063","url":null,"abstract":"The precision characteristics of the absorbance measurements obtained with a low-cost miniature spectrometer incorporating an array detector were evaluated. Uncertainties in absorbance measurements were due to a combination of non-uniform light intensity and detector response over the wavelength range examined (350-850 nm), in conjunction with the digitization of the intensity indications and the intrinsic noise of the detecting elements. The precision characteristics are presented as contour plots displaying the expected RSD% of absorbances on the absorbance versus wavelength plane. The minimum RSD% for the spectrometer configuration tested was observed within the 0.2-1.5 absorbance units and 500-750 nm wavelength range. Without invoking signal enhancement features of the data-acquisition program (scan average, higher integration times, smoothing based on averaging the signal detected by adjacent pixels), the attainable precision within this range was 0.4-0.8%. A computer program based on Monte Carlo simulations was developed for the prediction of absorbance precision characteristics under various conditions of measurements.","PeriodicalId":15248,"journal":{"name":"Journal of Automated Methods & Management in Chemistry","volume":"25 2","pages":"35-42"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/S1463924603000063","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"27794721","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: 6

Application of a catalytic combustion sensor (Pellistor) for the monitoring of the explosiveness of a hydrogen-air mixture in the upper explosive limit range. 催化燃烧传感器(Pellistor)用于监测氢气-空气混合物在爆炸上限范围内的爆炸性。

Journal of Automated Methods & Management in Chemistry Pub Date : 2003-01-01 DOI: 10.1155/S1463924603000208

M Krawczyk, J Namiesnik

引用次数: 12