Determinação de bifenilos policlorados em milho através de extração em fase sólida seguida de cromatografia a gás acoplada à espectrometria de massas

Química Nova

Thiago Guilherme Schwanz²  Susana Mohr²  Liliane Medianeira Favero Porte¹  Nilo Zanatta¹  Helio Gauze Bonacorso¹  Marcos Antônio Pinto Martins¹  Joni Hilda Costabeber¹ 

[1] ,Universidade Federal de Santa Maria Centro de Ciências Rurais Departamento de Tecnologia e Ciência dos AlimentosSanta Maria RS ,Brasil

关键词: PCB;    corn;    GC;   

DOI  :  10.1590/S0100-40422012000300021

来源: SciELO

【 摘 要 】

This paper describes an analytical method for analyzing polychlorinated biphenyls in corn samples using solid phase extraction (SPE) followed by determination by GC-MS. All calibration curves proved linear (r> 0.99). Recoveries ranged between 74.1 and 110.6% with relative standard deviation lower than 20% for all compounds. The limits of quantitation for the method were between 0.025 and 0.1 ng g-1. Of the 51 samples analyzed, PCB 180 showed the highest frequency, being detected in more than 39%, followed by PCB 138, detected in more than 33% of samples.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License