砷盐检查古蔡法中，中国药典规定砷斑为（）。
A: 1.0μgAs
B: 1.5μgAs
C: 2.0μgAs
D: 2.5μgAs
A: 1.0μgAs
B: 1.5μgAs
C: 2.0μgAs
D: 2.5μgAs
举一反三
- 枸橼酸中砷检查:精密量取2ml,标准砷(1μgAs/ml)依法测定,规定砷限量为百万分之一,应取供试品多少克?
- 古蔡氏法检查砷盐，是比较砷斑的（
- If you smell gas, ______ the gas, leave the house, and call the gas company.
- A Popularity and use of natural gas B Natural gas reserves and supply C Natural gas prices D Clean fuel of choice E Disadvantages of natural gas F Natural gas consumption Paragraph 2______
- 中国药典收载的古蔡法检查砷盐的基本原理是: