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Position: Home > Articles > Determination of Ethephon,Phosphorous Acid and Phosphoric Acid in Ethephon 40% AS by IC Modern Agrochemicals 2012,11 (1) 36-39

IC法测定乙烯利水剂中乙烯利、亚磷酸、磷酸的含量

作  者:
张锦梅;王敬花;毕富春;张习志
单  位:
青岛盛瀚色谱技术有限公司
关键词:
IC;乙烯利;亚磷酸;磷酸;电导检测
摘  要:
建立了IC法检测乙烯利水剂中乙烯利、磷酸、亚磷酸的方法。选用SH–AC–1阴离子分离柱,淋洗液选用3.6 mmol/L Na2CO3+4.5 mmol/L NaHCO3,等度淋洗,流速2.0 mL/min,进样量10μL,抑制电导检测,样品水溶解。在此条件下,线性相关系数均大于0.999;亚磷酸、磷酸和乙烯利检出限(S/N=3)分别为12.1?g/L、53.4μg/L和73.7μg/L;相对标准偏差(RSD)为0.58%、2.87%和1.26%,样品平均加标回收率在97.0%~100.1%,重现性好。该方法简便、快速、灵敏、准确,可以用于乙烯利水剂中乙烯利、磷酸和亚磷酸的同时测定。
译  名:
Determination of Ethephon,Phosphorous Acid and Phosphoric Acid in Ethephon 40% AS by IC
作  者:
ZHANG Jin-mei1,WANG Jing-hua1,BI Fu-chun2,ZHANG Xi-zhi1 (1.Qingdao Shenghan Chromatograph Technology Co.,Ltd,Shandong Qingdao 266101,China;2.Hebei Guoxinnuonong Biotechnology Co.,Ltd,Hebei Hejian 062450,China)
关键词:
IC;ethephon;phosphorous acid;phosphate acid;conductive detection
摘  要:
A method for the determination of ethephon,phosphorous acid and phosphoric acid in ethephon 40% AS was established by IC.Sample was dissoluted by water;chromatographic separation was performed on a SH-AC-1 anion separator column;3.6 mmol /L Na2CO3 + 4.5 mmol/L NaHCO3 was chosen as eluant;Isocratic elution,flow rate 2.0 mL/min,sample size 10 μL and suppressed conductivity detection were used.Under these conditions,the linear relative coefficient of ethephon,phosphorous acid and phosphoric acid attained more than 0.999;the detection limits of ethephon,phosphorous acid and phosphoric acid(S/N=3) were 12.1 μg/L,53.4 μg/L and 73.7 μg/L,RSDs were 0.58%,2.87% and 1.26%,respectively.Average recoveries of spiked sample were 97.0%-100.1%.The method is simple,rapid,sensitive and accurate.It is suitable for simulatenous determination of ethephon,phosphorous acid and phosphoric acid in ethephon 40% AS.

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