Sample pretreatment reagent and method in process of measuring arsenic in urine

Sample pretreatment reagent and method in process of measuring arsenic in urine

  • CN 108,776,125 B
  • Filed: 08/03/2018
  • Issued: 07/14/2020
  • Est. Priority Date: 08/03/2018
  • Status: Active Grant
First Claim
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1. A sample pretreatment method in the process of measuring arsenic in urine is characterized in that used digestive juice consists of first digestive juice and second digestive juice, the first digestive juice is added into a urine sample and digested for 5-10 minutes at 100 ℃

  • , the first digestive juice is mixed liquid formed by mixing 30% of hydrogen peroxide by mass percentage and 4% of sodium hydroxide by mass percentage according to the volume of 1 (1.5), and nitric acid with 68% of the second digestive juice by mass percentage is added for digestion for 5-20 minutes at the same temperature.

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