What we need to ensure the accuracy of our environmental health and human health monitoring activities?
1. good sampling method, techniques and system
2. Good analytical method or extraction procedures
3. Good, sensitive and accurate machine to measure chemicals in the sample
4. Confident and satisfaction on the data
5. Done by the expert
We can ask the technician or students who analyse the samples. Do they know why they follow all the procedures? why we do extraction? etc...
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