Determination of heavy metals in body washes using Inductively Coupled Plasma Optical Emission Spectrometry (Icp-Oes) / Wan Aida Hazwani Wan Azizan

This study was carried out to determine the amount of heavy metals (lead, chromium, zinc and copper) in body washes of different brands (from different countries) by using ICP-OES. The samples used were body wash D (Indonesia and Malaysia), body wash P (Thailand and Malaysia) and body wash A (Vietnam and Malaysia). The heavy metals were extracted from the samples by using wet digestion method. This analysis was conducted by using standard calibration method. The emission signals of lead, chromium, zinc and copper were measured at wavelength of 220.353, 267.716, 206.200 and 327.393 nm respectively. Based on the results' interpretation, the concentration of lead, chromium, zinc and copper in; body wash D (Indonesia) are 0.19 ± 0.0006, 0.31 ± 0.0006, 1.83 ± 0.0025 and 0.17 ± 0.0006; body wash D (Malaysia) are 0.33 ± 0.0012, 0.21 ± 0.0000, 2.52 ± 0.0006 and 0.07 ± 0.0000; body wash P (Thailand) are 0.10 ± 0.0006, 0.17 ± 0.0006, 3.21 ± 0.0066 and 0.10 ± 0.0006; body wash P (Malaysia) are 0.10 ± 0.0006, 0.14 ± 0.0000, 4.52 ± 0.0038 and 0.07 ± 0.0000; body wash A (Vietnam) are 0.67 ± 0.0006, 1.28 ± 0.0000, 4.78 ± 0.0017 and 0.48 ± 0.0006 and body wash A (Malaysia) are 0.40 ± 0.0006, 0.62 ± 0.0006, 2.19 ± 0.0076 and 0.40 ± 0.0006 mg/kg respectively.