PERBANDINGAN DESTRUKSI BASAH DAN KERING DENGAN VARIASI ZAT PENGOKSIDASI PADA ANALISIS TIMBAL DALAM RAMBUT PETUGAS OPERATOR SPBU SECARA AAS

Abstract

Lead (Pb) is a heavy metal that can cause poisoning and accumulate in the human body. Determination of  lead levels by using  AAS the condition is that the sample must be a solution, then it is necessary to destruct first. There are two types of destruction that can be done, namely wet destruction using acid reagents to decompose samples and dry destruction by heating or destruction using very high temperatures. HNO₃ oxidizing agent and HNO₃ mixture with HClO₄  are the main oxidizing agents that can provide the best destructive results compared to other oxidizing agents. This study aims to determine the best oxidizing and destructive substances present in the hair using Atomic Absorption Spectrophotometry  (AAS). The research was conducted at surabaya regional health laboratory in April - May 2021.  This research is comparative research.   The sample used is the hair of gelam gas station operator officer, Candi.  There are two ways of preparing samples that can be done in pb analysis on hair,  namely proses wet and dry destruction. The result of destruction is determined by the level of lead using Atomic Absorption Spectrophotometry  (AAS). The results of the analysis pno dry destructionHNO₃  as a whole has rentang  lead levels  0.1281-0.1958 mg / L. Dry destruction HNO₃ : HClO₄  secara overall has rentang lead levels  0.1457-0.2159  mg /L. HNO₃ closed wet construction has  lead content range 0.1431-0.2034  mg/L and wet destructive closed HNO₃ : HClO₄  has lead content range 0.1080-0.5371   mg/L. Based on these results, it can be known that all hair samples tested in this study contain lead levels that are still within normal limits or within the tolerance limit of < 12 μg/g.