Journal of Environmental Health Sciences (한국환경보건학회지)

Korean Society of Environmental Health (한국환경보건학회)
권호 표지

A Study on the Heavy Metals in Chalk

분필중의 중금속에 대한 연구

  • Lee, Sang-Bong (Department of Preventire Medicine, College of Medine, Gyeong Sang National University) ;
  • Choi, Moo-Ryong (Department of Preventire Medicine, College of Medine, Gyeong Sang National University)
  • Published : 1987.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

This study was carried out to determine the content of heavy metals in chalks. Samples were collected from 5 manufacturing companies of chalk. The content of lead and cadmium were analyzed by flame atomic absorption spectrophotometer. The results obtained were as follows: 1. The average content of lead was 22.0 ppm, and the range 6.4 - 50.9 ppm. 2. The average content and the range were 4.1 ppm and 2.8 - 4.8 ppm respectively.

Keywords