TY  - JOUR 
T1  - Development of Manual Shaking and Ultrasound-Assisted Surfactant-Enhanced Emulsification Microextraction for Analysis of Organophosphorus Pesticides in Aqueous Samples
JO  - Journal of the Brazilian Chemical Society
A1  - Xiong, Ya-Bing
A1  - Zhao, Yue
A1  - Yang, Zhong-Hua
SN  - 0103-5053
UL  - 10.21577/0103-5053.20170096
VL  - 28 
Y1  - 2017
PB  - Brazil 
ER  -