The Journal of Automatic Chemistry最新文献_第4页

The automatic methods group newsletter. 自动方法组通讯。

The Journal of Automatic Chemistry Pub Date : 1997-01-01 DOI: 10.1155/S1463924697000126

引用次数: 0

Abstracts of papers presented at the ISLAR (International Symposium on Laboratory Automation and Robotics) 1996. 1996年在实验室自动化和机器人国际研讨会上发表的论文摘要。

The Journal of Automatic Chemistry Pub Date : 1997-01-01 DOI: 10.1155/S1463924697000102

引用次数: 0

Single standard calibration and data processing in flow injection titration based on concentration gradients. 基于浓度梯度的流动注射滴定中的单标准校准和数据处理。

The Journal of Automatic Chemistry Pub Date : 1997-01-01 DOI: 10.1155/S1463924697000163

M C Araújo, A V Santos, R S Honorato, C Pasquini

{"title":"Single standard calibration and data processing in flow injection titration based on concentration gradients.","authors":"M C Araújo, A V Santos, R S Honorato, C Pasquini","doi":"10.1155/S1463924697000163","DOIUrl":"https://doi.org/10.1155/S1463924697000163","url":null,"abstract":"This paper describes use of gradients of concentration generated in flow injection (FI) systems to perform determinations based on points where the concentration of titrant and analyte are at stoichiometric ratio. Two procedures were developed. In one procedure the titrant is injected in a FI manifold and merges with the sample which is continuously pumped towards the detector. In the other procedure the sample is injected and merged with the titrant which is continuously pumped. Both techniques make use of concentration gradients of the sample or titrant generated in FI manifolds that contain a mixing chamber. This gradient is calibrated employing only one standard solution (usually the titrant) in order to convert any detector signal, obtained in the elapsed time after injection, to instantaneous concentration values. The flow system is microcomputer controlled and data are treated to locate points where the concentration of titrant and analyte are at the stoichiometric ratio. These points are found in abrupt changes of the signal x concentration curves obtained in the presence of the reaction. The method has been evaluated for determination of Fe(II) and acetic acid by spectrophotometric and conductimetric detection, respectively. Results show a mean relative standard deviation lower than 1%, an average accuracy of 1% and a high sampling processing capability (40 to 60 samples per hour).","PeriodicalId":22600,"journal":{"name":"The Journal of Automatic Chemistry","volume":"19 5","pages":"157-64"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/S1463924697000163","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"27795090","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: 3

Development and analytical performance of an automated screening method for cannabinoids on the Dimension clinical chemistry system. 维格临床化学系统大麻素自动筛选方法的建立及分析性能。

The Journal of Automatic Chemistry Pub Date : 1997-01-01 DOI: 10.1155/S1463924697000187

D M Obzansky, E G Gorman, S P Kramer, I S Masulli, E A Nuzzaci, W F Skogen

{"title":"Development and analytical performance of an automated screening method for cannabinoids on the Dimension clinical chemistry system.","authors":"D M Obzansky, E G Gorman, S P Kramer, I S Masulli, E A Nuzzaci, W F Skogen","doi":"10.1155/S1463924697000187","DOIUrl":"https://doi.org/10.1155/S1463924697000187","url":null,"abstract":"A fully automated, random access method for the determination of cannabinoids (UTHC) was developed for the Dimension AR and XL clinical chemistry systems. The method utilizes Abuscreen ONLINE reagents and a multianalyte liquid calibrator containing 11-nor-Delta(9)-THC-9-carboxylic acid. Within-run and total reproducibility, determined using NCCLS protocol EP5- T2, was less than 0.6% and 1.6% CV, respectively, at all concentrations. Calibration stability was retained for at least 30 days. An extensive evaluation of non-structurally related drugs and various physiological substances indicated lack of interference in the method. No sample carry-over was observed following a specimen containing 1886 ng/ml 11-nor-Delta(9)-THC-9-carboxylic acid. A 99.1% agreement (N = 445 samples) was found between an EMIT based method on the aca discrete clinical analyser and the Dimension UTHC method.Dimension clinical chemistry system and aca discrete clinical analyser are registered trademarks of Dade International.","PeriodicalId":22600,"journal":{"name":"The Journal of Automatic Chemistry","volume":"19 5","pages":"169-73"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/S1463924697000187","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"27795092","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

1. The Data Librarian: laboratories today-the need for the Librarian. 1. 数据管理员:今天的实验室——对图书管理员的需求。

The Journal of Automatic Chemistry Pub Date : 1997-01-01 DOI: 10.1155/S1463924697000230

J Liscouski

引用次数: 1

Flow injection analysis of iron in rain water with thiocyanate and surfactant. 硫氰酸盐和表面活性剂流动注射分析雨水中的铁。

The Journal of Automatic Chemistry Pub Date : 1997-01-01 DOI: 10.1155/S1463924697000072

A N Tripathi, S Ehikhalikar, K S Patel

引用次数: 8

The automatic methods group newsletter. 自动方法组通讯。

The Journal of Automatic Chemistry Pub Date : 1997-01-01 DOI: 10.1155/S1463924697000096

引用次数: 0

Abstracts of papers presented at the 1997 Pittsburgh Conference. 1997年匹兹堡会议上发表的论文摘要。

The Journal of Automatic Chemistry Pub Date : 1997-01-01 DOI: 10.1155/S1463924697000114

引用次数: 0

Optimization of control parameters of a hot cold controller by means of Simplex type methods. 用单纯形法优化冷热控制器的控制参数。

The Journal of Automatic Chemistry Pub Date : 1997-01-01 DOI: 10.1155/S1463924697000035

C Porte, M Caron-Poussin, S Carot, C Couriol, M M Moreno, A Delacroix

引用次数: 2

Stabilized filter-supported bilayer lipid membranes (BLMs) for automated flow monitoring of compounds of clinical, pharmaceutical, environmental and industrial interest. 稳定过滤器支持的双层脂质膜(BLMs)用于临床，制药，环境和工业兴趣化合物的自动流量监测。

The Journal of Automatic Chemistry Pub Date : 1997-01-01 DOI: 10.1155/S1463924697000011

D P Nikolelis, C G Siontorou

{"title":"Stabilized filter-supported bilayer lipid membranes (BLMs) for automated flow monitoring of compounds of clinical, pharmaceutical, environmental and industrial interest.","authors":"D P Nikolelis, C G Siontorou","doi":"10.1155/S1463924697000011","DOIUrl":"https://doi.org/10.1155/S1463924697000011","url":null,"abstract":"This paper describes the results of analytical applications of electrochemical biosensors based on bilayer lipid membranes (BLMs) for the automated rapid and sensitive flow monitoring of substrates of hydrolytic enzymes, antigens and triazine herbicides. BLMs, composed of mixtures of egg phosphatidylcholine (egg PC) and dipalmitoylphosphatidic acid (DPPA), were supported on ultrafiltration membranes (glass microfibre or polycarbonate filters) which were found to enhance their stability for flow experiments. The proteins (enzymes, antibodies) were incorporated into a floating lipid matrix at an air-electrolyte interface, and then a casting procedure was used to deliver the lipid onto the filter supports for BLM formation. Injections of the analyte were made into flowing streams of the carrier electrolyte solution and a current transient signal was obtained with a magnitude related to the analyte concentration. Substrates of hydrolytic enzyme reactions (acetylcholine, urea and penicillin) could be determined at the micromolar level with a maximum rate of 220 samples/h, whereas antigens (thyroxin) and triazine herbicides (simazine, atrazine and propazine) could be monitored at the nanomolar level in less than 2 min. The time of appearance of the transient response obtained for herbicides was increased to the order of simazine, atrazine and propazine which has permitted analysis of these triazines in mixtures.","PeriodicalId":22600,"journal":{"name":"The Journal of Automatic Chemistry","volume":"19 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/S1463924697000011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"27794493","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