Study of organohalogens in foodstuffs and environmental samples by neutron activation analysis and related techniques

• Autorzy: Xu D. , Chai Z. , Zhang H. , Mao X. , Ouyang H. , Sun H.
• Języki publikacji: EN

Abstrakty

EN

Pine needles and foodstuffs collected from Beijing, China, were analyzed by instrumental neutron activation analysis (INAA) combined with organic solvent extraction for total halogens, extractable organohalogens (EOX) and extractable persistent organohalogens (EPOX). The INAA detection limits are 50 ng, 8 ng and 3.5 ng for Cl, Br and I, respectively. The contents and distribution patterns of organohalogens in these samples are reported. EOCl accounted for 0.013 0.016% and 1.6 2.7% of the total chlorine in yogurt and apples, respectively, which suggested that chlorine in foodstuffs mainly existed as inorganic species and non-extractable organochlorines. EOCl contents in pine needles and foodstuffs were noticeably higher than those of EOBr and EOI. For pine needles, yogurt and apples, 1.6 34%, 23 58% and 29 35% of EOCl remained as extractable persistent organochlorine (EPOCl), respectively. Pine needle containing higher EOCl contents in chemical industrial and traffic hub areas indicated that chemical industries and exhaust emission from vehicle were the main sources of organochlorines in the Beijing's air. The relative proportions of the known organochlorines (such as HCHs, DDTs, chlordanes, heptachlor, HCB and PCBs) to the total EOCl and EPOCl were 0.04 1.6% and 0.7 21.5%, respectively, which implied that the identity of species of a major portion of the EOCl and EPOCl measured in pine needles was unknown.

Słowa kluczowe

EN

instrumental neutron activation analysis (INAA); pine needle; foodstuff; extractable organohalogen

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2004
• Tom: Vol. 49, nr 3
• Strony: 101--106
• Opis fizyczny: Bibliogr. 32 poz., rys.

Twórcy

autor

Xu D.

• Laboratory of Nuclear Analytical Techniques, Institute of High Energy Physics, Chinese Academy of Sciences, P. O. Box 918, Beijing 100039, China

autor

Chai Z.

• Laboratory of Nuclear Analytical Techniques, Institute of High Energy Physics, Chinese Academy of Sciences, P. O. Box 918, Beijing 100039, China
• Institute of Nuclear Techniques, Shenzhen University, Shenzhen 500014, China, Tel.: [phone], Fax: [phone]

autor

Zhang H.

• Laboratory of Nuclear Analytical Techniques, Institute of High Energy Physics, Chinese Academy of Sciences, P. O. Box 918, Beijing 100039, China and Institute of Nuclear Techniques, Shenzhen University, Shenzhen 500014, China, Tel.: [phone], Fax: [phone]
• Institute of Nuclear Techniques, Shenzhen University, Shenzhen 500014, China, Tel.: [phone], Fax: [phone]

autor

Mao X.

• Laboratory of Nuclear Analytical Techniques, Institute of High Energy Physics, Chinese Academy of Sciences, P. O. Box 918, Beijing 100039, China

autor

Ouyang H.

• Laboratory of Nuclear Analytical Techniques, Institute of High Energy Physics, Chinese Academy of Sciences, P. O. Box 918, Beijing 100039, China

autor

Sun H.

• Institute of Nuclear Techniques, Shenzhen University, Shenzhen 500014, China

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