I am going to do TDS analysis in one area and wish to analysis the toxic and nutrient level based on that. Specially wish to analysis what are the major sources of Hg and Cd in food (type), When I am going to sampling, I think to do first initial survey. What are the best method
1. Questionnaire (given to family and record those, eg. month time and collect), that mean family food basket. Or do we need to take the information individually
2, Rapid survey from food city and super market?
3. Web-based survey?
Can you give me your idea and experience?
you are running after data that covers your research area. I think you need every single information as a benchmark for your study I suggest to do the three choices you mentioned and choose one among them to take your samples for analysis
for example X product is expected to have traces of Hg you need to mention the monthly in take of a family
the monthly consumption of supermarkets of your city
the intake of people you surveyed on the net
but in order to make a well binded research work you have to concentrate in one among the three choices
the data you collect can be useful for related papers or further research for your project.
BETTER TO TAKE SAMPLES FROM FOOD FAMILY BASKET
good luck
The first choice, collecting information from family as well as samples from a family food basket is accurate for exposure assessment. A market survey can tell you about the levels in existing product but not about the consumption levels, which are very important for calculation. Hence find out the actual food intake by family, collect samples at the level of consumption and analyze.
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