Q10
1. How many are procedures used to control the quality of the environmental analysis? And what are they?
2. Distinguish between the instrumental blank and method blank.
3. What are some considerations,which must be taken into account in selecting suitable sampling container?
4. If you are assigned to determine the pesticide contamination in apple,what kind of sampling will you selectrd; grab sampling, composite sampling and continuous sampling? And why do you choose it?