Analysis of Butyltin Compounds(mono-, di-, and tributyltin) in Human Blood

혈액 중의 주석화합물(MBT, DBT, TBT)의 분석과 농도에 관한 연구

  • Kim, Nam Sook (Ocean Environmental Climate Division, Korea Ocean Research and Develoment Institute) ;
  • Park, Dong Uk (Department of Environmental Health) ;
  • Oh, Jae Ryoung (Ocean Environmental Climate Division, Korea Ocean Research and Develoment Institute) ;
  • Shim, Woon Joon (Ocean Environmental Climate Division, Korea Ocean Research and Develoment Institute)
  • Received : 2001.02.05
  • Published : 2001.04.25

Abstract

Butyltin compounds, including mono-(MBT), di-(DBT) and tributyltin(TBT) were analyzed in 44 human blood samples randomly collected from a hospital in "K" a city. Gas chromatograph equipped with flame photometric detector(FPD) was used to quantify the amounts of butylin compounds. Method detection limits(MDL) of this analytical method were 3.69ng Sn/g for MBT, 0.91ng Sn/g for DBT and 1.09ng Sn/g wet wt for TBT respectively. Standard reference material(SRM) containing of $1.3{\mu}g/g$ TBT as chloride was analyzed to check if this analytical results would be reliable. Recovery of about 90% was obtained through this analysis, indicating that the analytical method from butyltin compounds blood was reliable. The concentrations of butyltin compounds ranged MDL(<3.69) to 7.93ng Sn/g for MBT and 1.15 to 5.41ng Sn/g wet wt for DBT. Tributyltin was below detection limit in all samples. Detection limits of our results are lower than those reported by Kannan et al. who reported butyltin compounds in 33 human blood samples in the United States. Detection of MBT and DBT on blood sample implies that butyltin compounds could be absorbed through consumption of seafoods or exposure to food stuffs made of plastics and household items. Further study is needed to examine if butyltin compounds in blood can be reliably analyzed and used as intake index.

우리나라 해안에 인접한 "K"지역 병원에서 구한 44명의 혈액에서 유기주석화합물인 mono-butyltin(MBT), dibutyltin(DBT) 그리고 tributyltin(TBT)을 불꽃광도검출기가 부착한 가스크로마토그라프로 분석하였다. 본 연구의 목적은 일부 주민의 혈액을 대상으로 MBT, DBT, TBT에 대한 분석방법과 농도를 고찰하는 것이다. 본 연구에서 이용한 분석방법에 대한 검출한계(method detection limit, MDL)는 MBT 3.67, DBT 0.91, TBT는 1.09ng Sn/g 습중량 기준으로 나타났다. 또한 일본 국립환경연구소가 제조한 농어중의 $1.3{\mu}g/g$ TBT as chloride의 농도가 가진 표준물질(standard reference material)을 분석한 결과 공인값과 잘 일치하였다. 혈액 중에서 검출된 농도의 범위는 MBT가 3.69-7.93ng Sn/g, DBT 1.15-5.41ng Sn/g이었고, TBT는 검출한계 미만 및 미검출이었다. 혈액중에서 검출된 MBT 및 DBT의 흡수와 축적은 사람들이 유기주석화합물이 생체축적된 수산물의 섭취, 각종 플라스틱류 사용 등에 원인이 있을 것으로 사료된다. 혈액중 유기주석화합물이 인체로 흡수되는 내재용량(internal dose)을 평가할 수 있는 지표서의 신뢰성에 관한 연구가 계속해서 진행되어야 할 것으로 판단된다.

Keywords

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