cod快速消解分光光度法硫酸汞和重铬酸钾配比？

Ins_d42d33e5

2024/03/28

私聊

水质检测

看新标准的时候里面这个表格，我猜意思是重铬酸钾和硫酸汞混合后取1ml，但是括号里的2+1是啥意思？2ml的重铬酸钾和1ml的硫酸汞混合均匀后取一毫升吗？

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