This study was performed to compare the lead levels of 20 quality control standard samples(KOSHA:18-2000) and 72 field samples in lead-acid battery manufacturing plant between ICP and portable-XRF methods.
1. While the proficiencies of 20 quality control standard samples by ICP were 100％, those analytic result values by XRF were 75％.
2. The correlation coefficient(r) between the reference values for quality control (REF) and the analytic result values by ICP (ICP) was 1.0(p<0.05), and simple linear regression equation and the coefficient(R2) were REF = -0.0009 + 1.016 ICP and 0.9997, respectively.
3. The correlation coefficient(r) between the analytic result values of quality control standard samples by ICP(ICP and by XRF(XRF) was 0.975(p<0,005), and simple linear regression equation and the coefficient(R2) were ICP = -0.0003 + 1.0002 XRF and 0.950, respectively.
4. The correlation coefficient(r) between the analytic result of personal protection. values for lead samples of a lead-acid battery manufacturing plant by ICP (ICP) and by XRF (XRF) was 0.993(p<0.005). and simple linear regression equation and the coefficient(R2) were ICP=-2.058 + 0.996 XRF and 0.987, respectively.
5. While the frequency distributions of XRF /ICP(Ratio) for each ICP concentration levels in a lead-acid battery manufacturing plant revealed high proportion in ratio rage of 0.876-1.125 than in ration rang of 1.126-1.375. Also, ICP concentration level in ration range of 0.786-1.125 was increased with increase of frequency distribution of XRF/ ICP.
6. The limit of detection of XRF on lead was determined to be 6.11㎍/filter
The data presented in this study indicated that relationship for lead level of quality control samples and field samples in a lead -acid battery manufacturing plant by ICP and portable-RF methods was proved. The practicing industrial hygienist can use portable-XRF to produce a rapid on-site determination of lead exposure that can immediately be communicated to workers and help identify appropriate levels of personal protection.
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