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由于我厂生产上的需要,对微量镁的快速测定提出了新的要求。通过调查、试验研究,认为铬黑T比色法测定微量镁,能达到快速、准确、重现性好的效果。本文就铬黑T比色法中,国产铬黑T(不经纯化)的甲醇溶液,水溶液,pH影响,元素的干扰及掩蔽,发色后的稳定性等,做了镁的比色条件试验。
Due to the needs of our factory production, the rapid determination of trace magnesium put forward new requirements. Through investigation and experimental research, it is considered that the determination of trace magnesium with chrome black T colorimetric method can achieve the rapid, accurate and reproducible results. In this paper, chromium colorimetric T colorimetric method, the domestic chromium black T (without purification) of methanol solution, aqueous solution, the impact of pH, elemental interference and masking, stability after hair color, magnesium colorimetric conditions were tested .