论文部分内容阅读
文献提出罗丹明 B-磷钼钒蓝缔合物在明胶和OP 乳化剂存在下测定磷,该法硅有干扰。磷钼钒酸与碱性染料离子缔合物法大量硅不干扰磷的测定,但对氧化剂较为敏感。本文对磷钼钒酸-罗丹明 B 缔合物存聚乙烯醇作增溶剂的条件下测定磷进行了研究。在形成磷钼钒-罗丹明 B 四元缔合物后过量之罗丹明 B 用高锰酸钾破坏,有效地消除了过量罗丹明 B 对测定的不利影响。提出了碳钢中磷的测定方法。本法摩尔吸光系数∑_(390)=1.7×10~5,灵敏度较钼蓝法提高了10倍左右.
The literature suggests that rhodamine B-phosphomolybdate-vanadium blue associates detect phosphorus in the presence of gelatin and OP emulsifiers, which interfere with silicon. Phosphomolybdic vanadic acid and alkaline dye ion association method A large number of silicon does not interfere with the determination of phosphorus, but more sensitive to oxidants. In this paper, phosphomolybdic acid - rhodamine B association polyvinyl alcohol as a solubilizer for the determination of phosphorus conditions were studied. Rhodamine B is destroyed by potassium permanganate after forming the phosphomolybdovanil-rhodamine B quaternary complex, which effectively eliminates the adverse effect of excess rhodamine B on the determination. Proposed carbon steel in the determination of phosphorus. The law molar extinction coefficient Σ_ (390) = 1.7 × 10 ~ 5, the sensitivity of molybdenum blue method increased by about 10 times.