【摘要】 目的:建立了气相色谱-质谱联用(GC/MS)同时测定硅藻泥涂料和其他涂料中苯、甲苯、乙苯、二甲苯异构体等苯系物的分析方法。方法:样品经过预处理直接进行定量分析,选用外标标准曲线法进行定量分析。结果:除了对间二甲苯,其他几种苯系物在100~4 000 ng范围内线性良好(线性相关系数r为0.999 5~0.999 8),对间二甲苯则在200~8 000 ng范围内线性良好(r为0.999 0),回收率达98.1%~103.5%,相对标准偏差(n=4)在0.5%~3.2%。本方法具有方便、快速、灵敏度高等特点,可满足硅藻泥涂料及其他涂料中苯系物含量的测定及对比。更多还原

【Abstract】 The objective is to establish an analytical method for simultaneous determination of benzene,toluene,ethylbenzene,xylene isomerization body benzene compounds in diatom mud paint and other coatings by GC/MS.The samples were analyzed directly by the pretreatment,and the standard curve method was used for quantitative analysis.In addition to p-xylene,m-xylene,other benzene series are linear in the range of 100~4 000 ng(r=0.999 5 ~ 0.999 8).Test results show that the recovery rate is98.1%~ 103.5%and relative standard deviation(n=4) is 0.5%~3.2%.Therefore,the method is satisfactory due to convenient,fast and sensitive,and it can be used to determine the contents of benzene series in diatom mud paint and other coatings.更多还原