title: [Levels for toxaphene in three categories of animal originated food in Pearl River Delta area].
abstract: OBJECTIVE
  To explore the present contamination status and profile of toxaphene in fish, chicken and meat samples in Pearl River Delta area.
  
  
  METHODS
  Totally 60 independent samples including fish, chicken, meat were collected from Huizhou,Guangzhou,Dongguan,Jiangmen of Pearl River Delta area in Guangdong by purposive sampling from Oct 2010 to Jun 2011. Toxaphene monomer Parlar26, Parlar50 and Parlar62 levels in three various categories of foods were quantitatively and qualitatively analyzed referencing international authoritative standard methods by utilizing isotope dilution high-resolution gas chromatography/high-resolution double-focusing magnetic mass spectrometry (HRGC-HRMS). The levels of pollution and characteristics were compared.
  
  
  RESULTS
  The concentration of toxaphene median(M) in fish, chicken and meat were 12.87, 5.8 and 1.89 ng/kg (gross weight) , respectively and the difference was significant(H = 14.29, P = 0.001). The toxaphene level in seafish (M = 32.07 ng/kg) was significantly higher than that in freshwater fish (M = 10.63 ng/kg, Z = -2.52, P = 0.012). The profile analysis showed that Parlar50 and Parlar26 were the predominant characteristic monomers in fish, which contributed about 44% (9.91/22.60, ng/kg) and 39% (8.89/22.60, ng/kg) to total concentration, and Parlar62 and Parlar26 were the two predominant congeners in poultry products, the two congeners accounted for 42% (5.03/11.90, ng/kg) and 38% (4.58/11.90, ng/kg). Furthermore Parlar26 and Parlar62 made up about 57% (3.45/6.08, ng/kg) and 26% (1.58/6.08, ng/kg) of total concentration in livestock meat respectively.
  
  
  CONCLUSIONS
  Toxaphene levels in all tested food samples are far lower than the limited standard stipulated by the European Food Safety Authority (EFSA) in 2002, which was 0.1 mg/kg. The congener characteristic difference in the three categories food indicated that the different enrichment ability in Toxaphene in different animal species.
authors.affiliation: Physical and Chemical Test Division, Shenzhen Center For Disease Control and Prevention, Shenzhen 518055, China. Email: 969676617@qq.com.
authors.forename: Jianqing
authors.initials: J
authors.lastname: Zhang
authors.forename: Zhibin
authors.initials: Z
authors.lastname: Liu
authors.forename: Yousheng
authors.initials: Y
authors.lastname: Jiang
authors.forename: Shengnong
authors.initials: S
authors.lastname: Li
authors.forename: Jian
authors.initials: J
authors.lastname: Zhou
authors.forename: Xiaoshi
authors.initials: X
authors.lastname: Lin
authors.forename: Shaoyou
authors.initials: S
authors.lastname: Lu
mesh_terms: D000818:Animals; D002849:Chromatography, Gas; D005399:Fishes; D005506:Food Contamination; D007306:Insecticides; D008460:Meat; D011200:Poultry; D014112:Toxaphene
chemical_list: D007306:Insecticides; D014112:Toxaphene