What is the first step in preparing for an environmental sampling event?
Developing a sampling plan ensures proper procedures are followed and helps avoid contamination or invalid results.
Which tool is most appropriate for collecting soil samples?
A soil auger is designed to collect subsurface soil samples with minimal disturbance to the surrounding environment.
Why is it important to use clean and sterile containers when collecting water samples?
Using clean containers prevents contamination that could affect the accuracy of laboratory test results.
What does a chain of custody form ensure in sample analysis?
The chain of custody form documents every individual who handled the sample to maintain its integrity and admissibility.
Which parameter is commonly measured in water quality testing?
pH is a basic water quality parameter that indicates how acidic or basic the water is.
Why must samples be stored at appropriate temperatures during transport?
Maintaining correct temperatures preserves the integrity of the sample and ensures valid test results.
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Which of the following is the primary reason for using chain of custody documentation in environmental sampling?
Chain of custody documentation ensures the integrity and traceability of environmental samples from collection to analysis, protecting the legal and scientific validity of results.
What is the most appropriate container material for collecting volatile organic compound (VOC) samples?
Glass containers are preferred for VOC sampling because they do not react with volatile chemicals and prevent contamination or loss of analytes.