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建立了HPLC法测定复配制剂60%乙·莠·滴丁酯悬乳剂中莠去津、乙草胺和2,4-滴丁酯含量,采用COSMOSIL C18不锈钢柱,以乙腈-水为流动相,在检测波长为235 nm下,对样品中莠去津、乙草胺和2,4-滴丁酯进行定量测定。实验表明,采用文中方法测定制剂中莠去津、乙草胺和2,4-滴丁酯含量的标准偏差为0.12、0.16和0.11;变异系数为0.58%、0.52%和1.08%;该方法的平均回收率为99.21%、99.60%和98.94%。
A HPLC method was developed for the determination of atrazine, acetochlor and 2,4-D butyl ester in the 60% B, A and B suspension. The COSMOSIL C18 stainless steel column was used with acetonitrile-water as the mobile phase , The detection wavelength of 235 nm, the sample of atrazine, acetochlor and 2,4-D butyl ester quantitative determination. The experimental results showed that the standard deviations of the contents of atrazine, acetochlor and 2,4-Dbutyl ester in the preparation were 0.12, 0.16 and 0.11. The coefficients of variation were 0.58%, 0.52% and 1.08% The average recoveries were 99.21%, 99.60% and 98.94%.