【摘要】 建立了用硝酸银分光光度法测定双甘膦中氯化物含量的方法。在硝酸介质中加入稳定剂,将氯离子和银离子生成的氯化银乳白色胶状物悬浮在溶液中,然后用分光光度计在波长390nm处测定氯离子含量。结果表明,本方法线性范围为0.0~5.0μg·m L-1,检出限为0.4μg·m L-1,加标回收率为98.2%~101.8%。该方法具有操作简便、干扰因素少、精密度和准确度较高等优点,适用于双甘膦中氯化物含量的测定。更多还原

【Abstract】 A determination method for chloride in N-phosphonomethyl aminodiacetic acid by silver nitrate spectrophotometry was established. Added stabilizer in nitric acid medium, the chloride ion and silver ions generated silver chloride ivory jelly suspended in solution, Then the chloride ion was determined at 390 nm. The results showed that the linear range was 0.0~5.0μg/m L, the detection limit was 0.4μg/m L, the standard addition recovery was 98.2%~101.8%.更多还原