ASTM D5863 原油和残渣油中镍、钒、铁、钠测定法（火焰原子吸收光谱法）
日期:2012-02-07 19:13
these test methods are determined by the sensitivity of the instruments, the amount of sample taken for analysis, and the dilution volume. A specific statement is given in Note 1.
1.5 For each element, each test method has its own unique precision. The user can select the appropriate test method based on the precision required for the specific analysis.
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.7 This standar

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