摘要
探索了不同消解方法对自制双甘膦中总磷测定的影响效果。分别考察了盐酸-硝酸消解法、硝酸-高氯酸消解法、氢氧化钠消解法、碳酸钾和碳酸钠混合熔剂消解法和浓硫酸消解法,并采用钼锑抗分光光度法测定总磷含量。通过对比多种消解方法,结果表明使用长颈定氮瓶的浓硫酸消解法效果最好。
In this paper,we discuss several digestion methods for measuring the total phosphorus content in N-（Phosphonomethyl）iminodiacetic acid（PMIDA）.The digestion systems of HCl-HNO3,HNO3-HClO4,NaOH,K2CO3-Na2CO3 and H2SO4 were chosen to be evaluated,and ammonium molybdate spectrophotometric method was adopted to measure the total phosphorus content.The results indicate that H2SO4 digestion method shows the best performance by using the fixed long-necked bottle of nitrogen.
出处
《四川化工》
CAS
2010年第5期37-39,共3页
Sichuan Chemical Industry
关键词
双甘膦
总磷
消解方法
n-（phosphonomethyl）iminodiacetic acid
total phosphorus
digestion methods
