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- W848613435 abstract "This study was carried out to determine the content of heavy metals in Crayons and Oil Pastele. Samples were collected from 3 manufacturing companies of Crayons and 2 manufacturing comppanies of Oil Pastele. 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 in Crayons and Oil Pastele were 26.2 ppm, 70.5 ppm, and the range 11.0-69.5 ppm, 26.5-353.0 ppm respectively. 2. The average content of cadmium in Crayons and Oil Pastele were all 4.1 ppm and range were 3.0-5.0 ppm, 2.5-5.0 ppm respectively." @default.
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- W848613435 date "1987-01-01" @default.
- W848613435 modified "2023-09-23" @default.
- W848613435 title "A Study on the Heavy Metals in Crayons and Oil Pastele" @default.
- W848613435 hasPublicationYear "1987" @default.
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