Sidra Sarwar

3 Questions 2 Answers 0 Followers

Questions related from Sidra Sarwar

What is the difference between Hazard Quotient (HQ) and Risk Quotient (RQ) in human health risk assessments?

How can I use these quotients in arsenic exposure assessment through drinking water?

15 October 2013 5,200 2 View

How long can arsenic stock and standard solutions be kept in the laboratory without preservation with 2% nitric acid?

I am working on biosorption of arsenic. I made arsenic stock solution by dissolving 1.320g arsenic trioxide with 4g NaOH and making up the volume to 1000 mL with distilled water. 2% nitric acid...

01 June 2013 7,377 10 View

Should nitric acid be added to water samples for digestion before estimation of arsenic on atomic absorption spectrophotometer?

I am working on checking arsenic concentration in water samples and will possibly apply any treatment method, is it necessary to preserve my samples in laboratory (before and after treatment) with...

01 April 2013 4,532 6 View