Field Analytical Chemistry & Technology最新文献_第9页

Fast gas chromatography/mass spectrometry analysis in support of risk-based decisions 快速气相色谱/质谱分析，支持基于风险的决策

Field Analytical Chemistry & Technology Pub Date : 1999-02-05 DOI: 10.1002/(SICI)1520-6521(1999)3:1<55::AID-FACT7>3.0.CO;2-M

Albert Robbat Jr., Sigurdur Smarason, Yuri Gankin

引用次数: 27

Rapid identification of nerve agents Sarin (GB) and Soman (GD) with the use of a field-portable GC/SAW vapor detector and liquid desorption front-end device 利用野外便携式气相色谱/SAW蒸汽检测器和液体解吸前端装置快速鉴定神经毒剂沙林(GB)和索曼(GD)

Field Analytical Chemistry & Technology Pub Date : 1999-02-05 DOI: 10.1002/(SICI)1520-6521(1999)3:1<45::AID-FACT6>3.0.CO;2-S

Dudley Williams, George Pappas

{"title":"Rapid identification of nerve agents Sarin (GB) and Soman (GD) with the use of a field-portable GC/SAW vapor detector and liquid desorption front-end device","authors":"Dudley Williams, George Pappas","doi":"10.1002/(SICI)1520-6521(1999)3:1<45::AID-FACT6>3.0.CO;2-S","DOIUrl":"10.1002/(SICI)1520-6521(1999)3:1<45::AID-FACT6>3.0.CO;2-S","url":null,"abstract":"The nerve agents Sarin (GB) and Soman (GD) were detected at the picogram level with the use of a field-portable gas chromatograph with a surface-acoustic-wave detector (SAW). The instrument, although primarily a vapor detector, can be modified with a simple front-end thermostat attachment, which allows for small-volume liquid injections for the detection of analytes in the vapor-pressure range of 0.1–5.0 torr. A field analytical method was developed with the use of the analyte surrogates dimethyl methyl phosphonate (DMMP) and triethyl phosphate (TEP). These compounds were used as internal standards by which agents GB and GD can be detected, with the use of this liquid injection method coupled to the vapor detector. Actual tests on GB and GD were performed under the same conditions, but in a more closely monitored but less field-representative laboratory environment. GB was quantitated from a calibration plot that relates signal to mass via a conversion factor in less than 10 s. The turnaround time for the instrument between data sets was 2 min, depending on the exact parameters of the method. ©1999 John Wiley & Sons, Inc. Field Analyt Chem Technol 3:45–53, 1999","PeriodicalId":100527,"journal":{"name":"Field Analytical Chemistry & Technology","volume":"3 1","pages":"45-53"},"PeriodicalIF":0.0,"publicationDate":"1999-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/(SICI)1520-6521(1999)3:1<45::AID-FACT6>3.0.CO;2-S","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89819024","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: 35

Enzyme-based electrodes for environmental monitoring applications 用于环境监测的酶基电极

Field Analytical Chemistry & Technology Pub Date : 1999-01-07 DOI: 10.1002/(SICI)1520-6521(1998)2:6<351::AID-FACT5>3.0.CO;2-R

John C. Schmidt

{"title":"Enzyme-based electrodes for environmental monitoring applications","authors":"John C. Schmidt","doi":"10.1002/(SICI)1520-6521(1998)2:6<351::AID-FACT5>3.0.CO;2-R","DOIUrl":"10.1002/(SICI)1520-6521(1998)2:6<351::AID-FACT5>3.0.CO;2-R","url":null,"abstract":"A biosensor is described for the detection of phenolic compounds in water. The biosensor was fabricated by immobilizing tyrosinase in a thin layer of Eastman AQ polymer on the surface of a screen-printed electrode. The sensitivity of the biosensor is stable for 2 months at room temperature. The biosensor exhibited good sensitivity to seven of the nine phenolic compounds tested. The limit of detection (LOD) of the biosensor to phenol, catechol, 4-ethylphenol, and p-cresol was 1.5 μg/l, 0.7 μg/l, 1.4 μg/l, and 3.52 μg/l, respectively. The average precision for these four phenols was found to be approximately 7% relative standard deviation (RSD). The correlation coefficient between the biosensor and U. S. EPA Method 420.1 was found to be 0.96 when samples of water from seven areas of the United States were spiked with phenol concentrations ranging from 0.25 to 2 mg/l and analyzed with both methods. The biosensor has the potential to reduce the sampling time and cost of analyzing phenolic compounds in the field. © 1998 John Wiley & Sons, Inc. Field Analyt Chem Technol 2: 351–361, 1998","PeriodicalId":100527,"journal":{"name":"Field Analytical Chemistry & Technology","volume":"2 6","pages":"351-361"},"PeriodicalIF":0.0,"publicationDate":"1999-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/(SICI)1520-6521(1998)2:6<351::AID-FACT5>3.0.CO;2-R","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79383738","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: 15

Biosensor technology for determination of BOD 生物传感器技术测定生物需氧量

Field Analytical Chemistry & Technology Pub Date : 1999-01-07 DOI: 10.1002/(SICI)1520-6521(1998)2:6<333::AID-FACT3>3.0.CO;2-0

Yoko Nomura, Gab-Joo Chee, Isao Karube

引用次数: 14

A fieldable modular biosensor for use in detection of foodborne pathogens 用于检测食源性病原体的可现场模块化生物传感器

Field Analytical Chemistry & Technology Pub Date : 1999-01-07 DOI: 10.1002/(SICI)1520-6521(1998)2:6<371::AID-FACT7>3.0.CO;2-F

Alan S. Louie, Ingrid G. Marenchic, Richard H. Whelan

引用次数: 11

Biosensors for field analytical monitoring 用于现场分析监测的生物传感器

Field Analytical Chemistry & Technology Pub Date : 1999-01-07 DOI: 10.1002/(SICI)1520-6521(1998)2:6<317::AID-FACT2>3.0.CO;2-5

Kim R. Rogers, Marco Mascini

引用次数: 39

Field demonstration of a portable flow immunosensor 便携式流量免疫传感器的现场演示

Field Analytical Chemistry & Technology Pub Date : 1999-01-07 DOI: 10.1002/(SICI)1520-6521(1998)2:6<341::AID-FACT4>3.0.CO;2-X

Anne W. Kusterbeck, Paul T. Charles

{"title":"Field demonstration of a portable flow immunosensor","authors":"Anne W. Kusterbeck, Paul T. Charles","doi":"10.1002/(SICI)1520-6521(1998)2:6<341::AID-FACT4>3.0.CO;2-X","DOIUrl":"10.1002/(SICI)1520-6521(1998)2:6<341::AID-FACT4>3.0.CO;2-X","url":null,"abstract":"A portable biosensor known as the FAST 2000, developed by the Naval Research Laboratory (NRL) and engineered by Research International, Inc., has been field tested for effectiveness in performing on-site analyses for two selected explosives, TNT and RDX. The biosensor uses antibody recognition of analyte molecules and subsequent fluorescence detection downstream to measure contaminant levels in groundwater and soil. In field trials at military bases identified by the U. S. EPA as priority Superfund cleanup sites, samples containing unknown concentrations of explosives were collected from groundwater monitoring wells at various locations and analyzed in the NRL sensor with no sample pretreatment or concentration. Test sites included the Volunteer Army Ammunition Plant, Chattanooga, TN and Umatilla Army Depot Activity, Umatilla, OR. Field samples were analyzed on-site by the portable FAST 2000, and splits were analyzed by an independent U. S. EPA-certified laboratory with the use of HPLC SW846 Method 8330. Results demonstrated that the FAST 2000 can detect explosives in environmental samples with accuracy and precision. Statistical analyses based on regression curves comparing the FAST 2000 and HPLC methods showed a high degree of correlation, with r2 values between 0.86 and 0.97. The assay system required small sample volumes (150 μl/test) and samples were analyzed in less than 3 min. The sensor was quantitative, with a method detection limit (MDL) of 10 μg/l. Beyond contaminated field samples, appropriate controls, blanks, and interferents were tested in the lab for certification and validation data requirements. Results were evaluated based on accuracy, precision, cost, time, and waste generation. © 1998 John Wiley & Sons, Inc. Field Analyt Chem Technol 2: 341–350, 1998","PeriodicalId":100527,"journal":{"name":"Field Analytical Chemistry & Technology","volume":"2 6","pages":"341-350"},"PeriodicalIF":0.0,"publicationDate":"1999-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/(SICI)1520-6521(1998)2:6<341::AID-FACT4>3.0.CO;2-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73769835","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: 17

Enzyme biosensor for determination of organophosphates 测定有机磷的酶生物传感器

Field Analytical Chemistry & Technology Pub Date : 1999-01-07 DOI: 10.1002/(SICI)1520-6521(1998)2:6<363::AID-FACT6>3.0.CO;2-J

Ashok Mulchandani, Priti Mulchandani, Wilfred Chen

引用次数: 28

Demonstration, acceptance, and use—Path and pitfalls 演示、接受、使用路径和陷阱

Field Analytical Chemistry & Technology Pub Date : 1999-01-07 DOI: 10.1002/(SICI)1520-6521(1998)2:6<315::AID-FACT1>3.0.CO;2-A

Llewellyn R. Williams

引用次数: 1

Dynamic work plans and field analytics, the keys to cost-effective hazardous waste site investigations 动态工作计划和现场分析，关键是具有成本效益的危险废物现场调查

Field Analytical Chemistry & Technology Pub Date : 1998-12-18 DOI: 10.1002/(SICI)1520-6521(1998)2:5<253::AID-FACT2>3.0.CO;2-T

Albert Robbat Jr., Sigurdur Smarason, Yuri Gankin

引用次数: 18