CAJ | 학술논문

探讨了一些金属元素对容量法测定碳含量的影响。结果表明：黄腐酸溶液中的还原态变价金属元素使测定结果偏大；Mg等金属元素会抑制黄腐酸碳含量的测定，使结果偏小。本文比较了磷酸三钠和氢氧化钠作为沉淀剂去除黄腐酸溶液中的金属离子的效果，两种沉淀剂脱除金属效果显著，但氢氧化钠做沉淀剂共沉淀现象明显，磷酸三钠脱除金属离子效果优于氢氧化钠。
탐토료일사금속원소대용량법측정탄함량적영향。결과표명：황부산용액중적환원태변개금속원소사측정결과편대；Mg등금속원소회억제황부산탄함량적측정，사결과편소。본문비교료린산삼납화경양화납작위침정제거제황부산용액중적금속리자적효과，량충침정제탈제금속효과현저，단경양화납주침정제공침정현상명현，린산삼납탈제금속리자효과우우경양화납。
Abstract: Influence of some chemical elements on the determination of carbon content by volumetric method was stud- ied. The results shows: carbon content was increase because of some reduced state varied valence chemical elements; carbon content was lower, because of the inhibition by chemical elements. Trisodium phosphate and sodium hydroxide are selected as a precipitating agent to remove metal ions in the solution of fulvic acid, and the result of them was very obviously, the co-precipitation phenomenon was obviously by sodium hydroxide, the result that Trisodium phosphate was selected as precipitating agent was better than the result of sodium hydroxide as precipitating agent.