摘要
用电感耦合等离子体发射光谱仪测定表面活性剂中总氯含量。样品经过处理,加入内标铟,分别在波长858.597 nm和894.8 nm进行测试。在波长858.597 nm和894.8 nm测试曲线浓度范围100~1000 mg/L,其线性分别是y=139.8 x-2136.7、y=128.1 x-1644.5,相关系数为0.9991、0.9990,相对标准偏差(RSD)为1.76%、2.06%。基于日常检测的实用性,选取不同厂家、不同盐含量的表面活性剂样品,在波长894.8 nm分别测试高盐样品(NaCl含量大于4%)、低盐样品(NaCl含量小于1%)和中盐样品(NaCl含量1%~4%),实验结果与各厂家测试结果差异性不大,其加标回收率为93.40%~107.51%。该方法测试化妆品表面活性剂中总氯含量方法操作简便、分析速度快、准确度高,在实际应用中具有可操作性。
Inductively coupled plasma emission spectrometer was used for determination of total chlorine content in surfactants.The samples were processed,added with internal standard indium,and tested at wavelengths of 858.597 nm and 894.8 nm,respectively.At 858.597 nm and 894.8 nm wavelength and in the concentration range of 100~1000 mg/L,the linear equations were y=139.8x-2136.7 and y=128.1x-1644.5,respectively,in which the correlation coefficients(r)were 0.9991 and 0.9990,and the relative standard deviations(RSD)were 1.76%and 2.06%.To test the practicability in daily detection,surfactant samples with different salt content from different manufacturers were selected to test at the wavelength of 894.8 nm,i.e.,high-salt sample(NaCl>4%),low-salt sample(NaCl<1%)and medium-salt sample(NaCl 1%~4%).The experimental results were consistent with the test results from various manufacturers,and the spiked recovery rates were in the range of 93.40%~107.51%.In conclusion,this method for determination of the total chlorine of cosmetic surfactants is simple,fast,accurate,and operable in practice.
作者
曾浩基
甘瑞洁
赵丹莉
朱思阳
龙永安
ZENG Hao-ji;GAN Rui-jie;ZHAO Dan-li;ZHU Si-yang;LONG Yong-an(Hua An Tang Biotech Group,Guangzhou,Guangdong 628214,China)
出处
《日用化学品科学》
CAS
2022年第9期25-28,共4页
Detergent & Cosmetics
