Field Analytical Chemistry and Technology最新文献_第5页

Underwriters sensor laboratory 保险商传感器实验室

Field Analytical Chemistry and Technology Pub Date : 1997-01-01 DOI: 10.1002/(SICI)1520-6521(1997)1:3<117::AID-FACT1>3.0.CO;2-U

J. Janata

引用次数: 0

Field sampling of trace levels of hydrogen sulfide with the use of solid adsorbent preconcentration 使用固体吸附剂预富集对痕量硫化氢进行现场取样

Field Analytical Chemistry and Technology Pub Date : 1997-01-01 DOI: 10.1002/(SICI)1520-6521(1997)1:3<145::AID-FACT4>3.0.CO;2-W

I. Dévai, R. Delaune

引用次数: 12

Performance of commercially available immunoassay-based field test kits for petroleum fuel hydrocarbons in soil 市售的基于免疫分析的土壤中石油燃料碳氢化合物现场测试试剂盒的性能

Field Analytical Chemistry and Technology Pub Date : 1997-01-01 DOI: 10.1002/(SICI)1520-6521(1997)1:3<135::AID-FACT3>3.0.CO;2-W

L. C. Waters, M. A. Palausky, R. Counts, R. Jenkins

{"title":"Performance of commercially available immunoassay-based field test kits for petroleum fuel hydrocarbons in soil","authors":"L. C. Waters, M. A. Palausky, R. Counts, R. Jenkins","doi":"10.1002/(SICI)1520-6521(1997)1:3<135::AID-FACT3>3.0.CO;2-W","DOIUrl":"https://doi.org/10.1002/(SICI)1520-6521(1997)1:3<135::AID-FACT3>3.0.CO;2-W","url":null,"abstract":"On-site field analytical methods have the potential to reduce the time and cost of assessing and remediating hazardous waste sites. Immunoassay-based methods are rapidly becoming a significant component in the arsenal of field analytical methods. However, the full potential of such alternative analytical methods will not be realized until their effectiveness has been experimentally validated. In this study, the performance of two immunoassay-based test kits for the analysis of petroleum fuel hydrocarbons in soil was evaluated. One kit was used in a semiquantitative format, the other in a quantitative format. The samples analyzed were either solvent or soil spiked with either a mixture of benzene, toluene, ethylbenzene, and the three isomers of xylene (BTEX), or gasoline. Of the 50 assays made with the semiquantitative test, 5 were false positives and 1 was a false negative. A soil matrix effect was observed that could account for false-positive results. Experimental results obtained with the use of the quantitative test with the BTEX mixture (68 assays) correlated well with expected results; R2 values of 0.976–0.983 and slopes of 0.94–0.97 were obtained. With gasoline (38 assays), R2 values of 0.957–0.987 and slopes of 0.76–0.78 were obtained. The lower slopes obtained with gasoline are indicative of the lower immunoreactivity of that particular sample of gasoline relative to the BTEX mixture. © 1997 John Wiley & Sons, Inc. Field Analyt Chem Technol 1:135–144, 1997","PeriodicalId":12132,"journal":{"name":"Field Analytical Chemistry and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85929352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Capabilities and limitations of ion mobility spectrometry for field screening applications 离子迁移率光谱法在现场筛选应用中的能力和局限性

Field Analytical Chemistry and Technology Pub Date : 1997-01-01 DOI: 10.1002/(SICI)1520-6521(1997)1:3<119::AID-FACT2>3.0.CO;2-S

H. Hill, Greg Simpson

{"title":"Capabilities and limitations of ion mobility spectrometry for field screening applications","authors":"H. Hill, Greg Simpson","doi":"10.1002/(SICI)1520-6521(1997)1:3<119::AID-FACT2>3.0.CO;2-S","DOIUrl":"https://doi.org/10.1002/(SICI)1520-6521(1997)1:3<119::AID-FACT2>3.0.CO;2-S","url":null,"abstract":"The objective of this review is to provide an overview of the capabilities and limitations of ion mobility spectrometry (IMS) as it pertains to field screening. The first section of the review provides a description of the instrument and its operation along with examples of its primary advantages of simplicity, selectivity, and sensitivity. IMS is a simple and potentially inexpensive analytical technique with tunably variable selectivity of response, especially for polar organic compounds, and with sensitivity on the order of 0.1 ppb for most vaporphase compounds. The second section describes the history of IMS as a field-portable technique and discusses some of the difficulties experienced in this capacity. Problems in IMS include competitive ion /molecule reactions, low resolution, a limited dynamic response range, ease of contamination, long residence times in the spectrometer, and concentration-dependent response characteristics. Some of these problems have been solved, while others await further developments in IMS before they cease to limit the utility of IMS in reliable field-portable instruments. Finally, future developments which are needed in order for IMS to reach its full capacity in portable instruments for field monitoring are discussed. These future developments include nontime-of-flight instruments, high-temperature operation, and nonradioactive ionization sources. © 1997 John Wiley & Sons, Inc. Field Analyt Chem Technol 1: 119 ‐ 134, 1997","PeriodicalId":12132,"journal":{"name":"Field Analytical Chemistry and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88736895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 113