产品介绍
xiang ying eagle analysis technology co., LTD. By using solid phase extraction enrichment of the 6 kinds of phthalic acid esters in water: phthalate (2 -) ethyl hexyl ester (DEHP), dimethyl phthalate (DMP), diethyl phthalate (DEP), butyl phthalate (DBP), phthalate dioctyl (DOP), phthalic acid butyl benzyl phthalate (BBP). With the help of regression modeling method of uniform design and computer optimization technique of 6 kinds of phthalic acid esters of solid phase extraction conditions for the design and optimization, optimal solid phase extraction conditions for: eluent ratio (volume ratio of hexane and acetone) 30:1, elution volume 2 mL, elution rate of 4 mL/min, the sample rate of 8 mL/min.
Enrichment XingyingGC7990plus with capillary gas chromatography of samples after test, the method of the linear range of 1 to 1, 000 mu g/L (DMP, DEP, DOP), 0.2 ~ 100 mu g/L (DBP and DEHP), 0.1 ~ 100 mu g/L (BBP); Linear regression equation of the correlation coefficient of 0.997 0 ~ 1.000, the detection limit of 0.01 ~ 0.4 mu g/L, the method of recovery of 69.0% ~ 117.0%, relative standard deviation is 2.2% ~ 9.5%.
滕州市翔鹰分析技术有限公司利用固相萃取技术富集了水中6种邻苯二甲酸酯类:邻苯二甲酸二(2-乙基己基)酯(DEHP)、邻苯二甲酸二甲酯(DMP)、邻苯二甲酸二乙酯(DEP)、邻苯二甲酸二丁酯(DBP)、邻苯二甲酸二辛酯(DOP)、邻苯二甲酸丁基苄基酯(BBP)。借助均匀设计法及计算机回归建模优化技术对6种邻苯二甲酸酯类的固相萃取条件进行了设计与优化,得到最佳固相萃取条件为:洗脱剂配比(正己烷与丙酮的体积比)30∶1,洗脱体积2 mL,洗脱速率为4 mL/min,上样速率8 mL/min。
富集后的样品用毛细管XingyingGC7990plus气相色谱检测,方法的线性范围为1~1 000μg/L(DMP、DEP、DOP),0.2~100μg/L(DBP、DEHP),0.1~100μg/L(BBP);线性回归方程的相关系数为0.997 0~1.000,检测限为0.01~0.4μg/L,方法回收率为69.0%~117.0%,相对标准偏差为2.2%~9.5%。