field sampling Articles
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Application of an Enzyme-Linked Immunosorbent Assay for the Analysis of Paraquat in Human-Exposure Samples
Paraquat is a toxic quaternary ammonium compound used as an herbicide around the world. Easy, fast, and inexpensive but sensitive methods are needed to study the effects of long-term, low-level exposure of paraquat on human health. An enzyme-linked immunosorbent assay (ELISA) was used for quantification of paraquat in urine and air-filter samples collected in a human-exposure study among farm ...
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Introducing LSPECS – Web-Based Integrated Field Program Management
LSPECS is web-based software designed to simplify management of environmental field sampling programs. LSPECS represents a step-change in field sampling program communication and administration at all stages: Design & schedule sampling plans individually, or as part of a wider program Create a program team with variable permissions to access to program details Delegate & receive ...
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Pesticides in Mississippi air and rain: A comparison between 1995 and 2007
A variety of current‐use pesticides were determined in weekly‐composite air and rain samples collected during the 1995 and 2007 growing seasons in the Mississippi Delta agricultural region. Similar sampling and analytical methods allowed for direct comparison of results. Decreased overall pesticide use in 2007 relative to 1995 generally resulted in decreased detection frequencies in air and ...
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Comparing Field Portable X-Ray Fluorescence (XRF) To Laboratory Analysis Of Heavy Metals In Soil
ABSTRACT Field portable x-ray fluorescence (XRF) continues to gain acceptance as a complement to traditional laboratory testing of metal contaminated soil. The quality of data produced by field XRF varies with site conditions, soil composition, and sample preparation. Quality assurance protocols for the field method usually require that a number of field samples be split and sent to a ...
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Soil CO2 Flux Measurements -- Using the LI-8100 System to Collect Air Samples for Estimating Soil Trace Gas Flux
Air samples can be collected from the same air stream used to measure soil CO2 flux with the LI-8100 Automated Soil CO2 Flux System, for estimating the flux of trace gas, such as methane (CH4), ammonia (NH3), nitrous oxide (N2O), isotopic species, etc. This application note describes a simple method for obtaining air samples from the LI-8100 in the field. The concentration of the gas species for ...
By LI-COR
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Cost effective monitoring strategies in MS4 programs - Case Study
A Tale of Two Cities: The Evolution of Monitoring Strategies In Municipal Separate Storm Sewer System (MS4) Programs City of Hoover NPDES Permit History On October 12. 2001, the Alabama Department erf Environmental Management (ADEM) issued National Pollutant Discharge Elimination Systems (NPDES) Permit Number ALS000001 for "Birmingham Area Municipal Separate Storm Sewer System and Jefferson ...
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Low-Flow (Minimal Drawdown) Ground-Water Sampling Procedures
Untitled Document Background The Regional Superfund Ground Water Forum is a group of ground-water scientists, representing EPA's Regional Superfund Offices, organized to exchange information related to ground-water remediation at Superfund sites. One of the major concerns of the Forum is the sampling of ground water to support site assessment and remedial performance ...
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Sample Handling Strategies for Accurate Lead-In-Soil Measurements in the Field and Laboratory
ABSTRACT The inhomogenous lead-in-soil matrix can present serious obstacles to accurate sample collection and handling. In typical lead-in-soil measurement, particle size related errors in sampling and sample handling often exceed all other sources of error. The magnitude of error can vary widely depending on the particulate nature of the lead contaminant and the effectiveness of control ...
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Portable lead analyzer to locate source of lead
OBJECTIVE: To investigate the sources of lead in the environment in children with elevated blood, with the help of a Field Portable X-Ray Fluorescence Analyzer. METHODS: One hundred and seven school children were chosen for this study on a random basis, from Mangalore and Karnataka. Their blood lead was analyzed. Of the cases analyzed, 10 students whose blood lead level was more ...
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Building Services Management - Air Sampling -
Untitled Document Maintenance professionals are often the first responders to mold complaints in their facilities. building occupants can be exposed to fungal (mold) spores through direct contact with contaminated uilding materials and contents. More commonly, exposure occurs by inhalation of spores found in reathable air spaces. Air monitoring or sampling may be a valuable ...
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How Can TO-15 Help You Solve Your Next IAQ Problem?
Untitled Document Have you ever been asked to investigate unpleasant odors in a home or at the workplace? Are occupants developing headaches or a feeling of nausea? It may be prudent for you to include a general volatile organic compound (VOC) scan in your sampling strategy. The best way to sample the widest range of compounds with the greatest of ease is TO-15. VOCs ...
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