Field Analytical Chemistry and Technology最新文献_第4页

Continuous, rapid biological aerosol detection with the use of UV fluorescence: Outdoor test results 使用紫外荧光进行连续、快速的生物气溶胶检测:室外测试结果

Field Analytical Chemistry and Technology Pub Date : 1999-01-01 DOI: 10.1002/(SICI)1520-6521(1999)3:4/5<249::AID-FACT4>3.0.CO;2-O

J. Eversole, J. Hardgrove, W. Cary, D. P. Choulas, M. Seaver

{"title":"Continuous, rapid biological aerosol detection with the use of UV fluorescence: Outdoor test results","authors":"J. Eversole, J. Hardgrove, W. Cary, D. P. Choulas, M. Seaver","doi":"10.1002/(SICI)1520-6521(1999)3:4/5<249::AID-FACT4>3.0.CO;2-O","DOIUrl":"https://doi.org/10.1002/(SICI)1520-6521(1999)3:4/5<249::AID-FACT4>3.0.CO;2-O","url":null,"abstract":"This report describes the design and principles of operation of an instrument for separately monitoring ambient aerosol concentrations of biological and nonbiological composition. A method of outdoor testing, and recent results, are also described. The single-particle fluorescence analyzer (SPFA) draws ambient air into an optical chamber through a sampling nozzle. Detection signals from each aerosol particle consist of an elastic scattering response as well as fluorescent emission in two distinct spectral bands. Differentiation of biological aerosols is based on the relative intensity of ultraviolet (UV) fluorescence measured from the particles following excitation with a 266-nm-wavelength laser pulse. During outdoor tests two types of organisms were released as aerosol sprays: Erwinia herbicola vegetative cells and Bacillus subtilis spores. The SPFA participated in 39 of a total set of 40 outdoor tests. Twenty-seven tests released E. herbicola and nine released B. subtilis. Analysis of these results indicates that a reliability of detection of about 90% for E. herbicola, and of about 87% for B. subtilis were achieved under the conditions of the tests, with a sensitivity near 1 particle/l. Some tests involved release of nonbiological aerosols that did not result in a significant change in fluorescent signals in the instrument. © 1999 John Wiley & Sons, Inc.* Field Analyt Chem Technol 3: 249–259, 1999","PeriodicalId":12132,"journal":{"name":"Field Analytical Chemistry and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78146359","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: 41

Study of purified bacteria and viruses by pyrolysis mass spectrometry 裂解质谱法纯化细菌和病毒的研究

Field Analytical Chemistry and Technology Pub Date : 1999-01-01 DOI: 10.1002/(SICI)1520-6521(1999)3:6<357::AID-FACT5>3.0.CO;2-J

S. Luo, J. Mohr, D. Sickenberger, Alex Hryncewich

引用次数: 11

Harsh-environment mass spectrometry workshop summary 恶劣环境质谱研讨会总结

Field Analytical Chemistry and Technology Pub Date : 1999-01-01 DOI: 10.1002/(SICI)1520-6521(1999)3:6<375::AID-FACT6>3.0.CO;2-C

D. Fries, T. Short

引用次数: 0

Chemical and biological aerosol detection and identification with field analytical instrumentation 用现场分析仪器进行化学和生物气溶胶的检测和鉴定

Field Analytical Chemistry and Technology Pub Date : 1999-01-01 DOI: 10.1002/(SICI)1520-6521(1999)3:4/5<219::AID-FACT1>3.0.CO;2-5

A. Snyder

引用次数: 7

Stimulation, simulation and field calibration 刺激，模拟和现场校准

Field Analytical Chemistry and Technology Pub Date : 1999-01-01 DOI: 10.1002/(SICI)1520-6521(1999)3:6<327::AID-FACT1>3.0.CO;2-3

HenkL.C. Meuzelaar

引用次数: 0

Bio-aerosol fluorescence sensor 生物气溶胶荧光传感器

Field Analytical Chemistry and Technology Pub Date : 1999-01-01 DOI: 10.1002/(SICI)1520-6521(1999)3:4/5<240::AID-FACT3>3.0.CO;2-#

F. L. Reyes, T. Jeys, N. Newbury, C. A. Primmerman, G. Rowe, A. Sanchez

引用次数: 75

Surface‐enhanced Raman detection of chemical vapors with the use of personal dosimeters 使用个人剂量计对化学蒸气进行表面增强拉曼检测

Field Analytical Chemistry and Technology Pub Date : 1999-01-01 DOI: 10.1002/(SICI)1520-6521(1999)3:6<346::AID-FACT4>3.0.CO;2-Q

T. Vo‐Dinh, D. Stokes

引用次数: 19

A new all-season passive sampling system for monitoring NO2 in air 一种新型的全季节空气NO2被动采样系统

Field Analytical Chemistry and Technology Pub Date : 1999-01-01 DOI: 10.1002/(SICI)1520-6521(1999)3:6<338::AID-FACT3>3.0.CO;2-U

H. Tang, T. Lau, B. Brassard, W. Cool

{"title":"A new all-season passive sampling system for monitoring NO2 in air","authors":"H. Tang, T. Lau, B. Brassard, W. Cool","doi":"10.1002/(SICI)1520-6521(1999)3:6<338::AID-FACT3>3.0.CO;2-U","DOIUrl":"https://doi.org/10.1002/(SICI)1520-6521(1999)3:6<338::AID-FACT3>3.0.CO;2-U","url":null,"abstract":"A new all-season passive sampling system for monitoring NO2 in air has been developed. This passive sampling system employs the same approach as the all-season sampling system for monitoring SO2 reported in FACT [Vol. 1(5), 1997] before, but a new collection medium (CHEMIX™) for sampling NO2 has been developed and is used. Compared to the existing collection media used for NO2 passive samplers, such as a triethanolamine (TEA)-coated cellulose fiber filter, CHEMIX™ is less affected by temperature and relative humidity, and has a higher sampling rate. This system has been extensively tested in the lab (temperature from −27 to 20 °C, relative humidity from 4 to 80%, and wind speed from 0.5 to 150 cm/s) and validated in the field in all climates. Comparing measurements obtained with the use of the new passive sampling system with equivalent measurements with the use of a continuous NO2 analyzer yielded an accuracy of greater than 85%. The new NO2 passive sampling system can be used to measure ambient NO2 concentrations ranging from 0.1 to 50 ppb based on a 1-month exposure period. © 1999 John Wiley & Sons, Inc. Field Analyt Chem Technol 3: 338–345, 1999","PeriodicalId":12132,"journal":{"name":"Field Analytical Chemistry and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76300246","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: 32

Analysis of trace COS in samples with high concentrations of H2S by gas chromatography and a sulfur chemiluminescence detector 用气相色谱法和硫化学发光检测器分析高浓度硫化氢样品中的痕量COS

Field Analytical Chemistry and Technology Pub Date : 1997-01-01 DOI: 10.1002/(SICI)1520-6521(1997)1:3<171::AID-FACT7>3.0.CO;2-#

H. Tang, P. Heaton, B. Brassard

引用次数: 1

Sampling error associated with collection and analysis of soil samples at TNT‐contaminated sites 与TNT污染场地土壤样本收集和分析相关的采样误差

Field Analytical Chemistry and Technology Pub Date : 1997-01-01 DOI: 10.1002/(SICI)1520-6521(1997)1:3<151::AID-FACT5>3.0.CO;2-#

T. Jenkins, C. Grant, G. Brar, P. Thorne, P. Schumacher, T. Ranney

{"title":"Sampling error associated with collection and analysis of soil samples at TNT‐contaminated sites","authors":"T. Jenkins, C. Grant, G. Brar, P. Thorne, P. Schumacher, T. Ranney","doi":"10.1002/(SICI)1520-6521(1997)1:3<151::AID-FACT5>3.0.CO;2-#","DOIUrl":"https://doi.org/10.1002/(SICI)1520-6521(1997)1:3<151::AID-FACT5>3.0.CO;2-#","url":null,"abstract":"This study assessed short-range spatial het- erogeneity of TNT concentrations in surface soils at ex- plosives-contaminated sites. Discrete and composite samples were analyzed by both on-site calorimetric techniques and standard laboratory protocols. Three lo- cations were sampled at each of three installations, and the results were used to estimate the relative contribu- tions of analytical error and sampling error. The major contaminant at seven of the nine sampling locations was TNT, and the on-site calorimetric method provided results that were in excellent agreement with laboratory results from the use of SW846 Method 8330. At four of the seven TNT locations, short-range concentration variations were modest and analyte distribution was sufficiently Gaussian to allow application of normal dis- tribution statistics to fractionate the total error vari- ances. For these four locations, standard deviations due to sampling were greater than the corresponding standard deviations due to analysis by factors ranging from 2.6 to 22.8. This relationship held whether charac- terization was done with the use of on-site analysis or laboratory analysis. For the other three TNT locations, enormous short-range spatial heterogeneity was en- countered and sampling error overwhelmed analytical error. To improve estimates of mean concentrations, sampling error was reduced by the use of composite sampling strategies. Overall, this study indicates that characterization of explosives-contaminated sites with the use of a combination of composite sampling, in- field sample homogenization, and on-site calorimetric analysis is an efftcient method of obtaining accurate and precise mean concentration estimates that are rep- resentative of the area. @ 1997 John Wiley & Sons, Inc. Field Analyt Chem Technol 1:151-163,1997","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":"76663794","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: 56