Dietary exposure to lead of adults in Shenzhen city, China.

Lead, a ubiquitous heavy metal, can be found in the environment and food. The present study is the first to estimate the lead dietary exposure of Shenzhen adults (≥ 20 years old) in various age-gender subgroups, and to assess the associated health risk. Food samples that represented the Shenzhen people's dietary pattern were collected and prepared for analysis.

[Determination of 8 elements in food by inductively coupled plasma optical emission spectrometer simultaneously].

Objective: To establish a method for determination of 8 elements including K, Na, Ca, Mg, Fe, Zn, Cu and Mn in food by inductively coupled plasma optical emission spectrometer (ICP-OES).

Methods: After high-pressure digestion by HNO3 in closed-vessel, 8 elements were simultaneously determined by ICP-OES.

Results: The detection limits of 8 elements ranged from 0.

[Health risk assessment on pesticide residues in drinking water in Shenzhen].

Objective: To conduct a health risk assessment of pesticide residues and its annual trend analysis in drinking water in Shenzhen City.

Methods: The water quality monitoring data of product water, pipe water and secondary supply water during from 2011 to 2013 were collected and analyzed. The risk evaluation models recommended by the U.

[Flow injection analysis method for hygienic examination of volatile phenol compounds in the air of residential area].

Objective: To establish a flow injection analysis for hygienic examination of volatile phenol compounds in the air of residential area.

Method: Volatile phenol compounds in the air was sampled by a fritted glass bubbler with 10 ml 0.1 mol/L sodium hydroxide inside and analyzed by a flow injection analyzer.

[Effect of ambient air PM10 concentration on the hospital outpatient visit of respiratory diseases in Shenzhen City].

Objective: To explore quantitatively the impact of the ambient air PM10 concentration (inhalable particulate matter) on the hospital outpatients for respiratory diseases.

Methods: Daily hospital visits data in 2008 was collected from a hospital in Shenzhen, meteorological data and air pollution data were collected from Shenzhen Meteorological Bureau and Shenzhen Environmental Protection Bureau, respectively. There was a time serial analysis using semi-parameter generalized additive model extend Poisson regression, after controlled with long-term tend, the-day-of-week, meteorological factors and other air pollutants.

[Analysis of pulmonary function of primary students living in air pollution areas].

Objective: To explore the changes of lung function of primary students living in the regions of different air pollution.

Methods: Nanshan District and Longgang District were decided respectively as a relatively heavy air pollution region and as a relatively light air pollution region in Shenzhen according to their air pollutant concentrations. The daily monitoring values on atmospheric SO2, NO2, PM10 and CO from 2006 to 2008 in the two districts were collected.

Elevated body burdens of PBDEs, dioxins, and PCBs on thyroid hormone homeostasis at an electronic waste recycling site in China.

A cross-sectional study of 25 sample sets (each set consisted of maternal serum and cord whole blood) from 50 pregnant women in zone A (n = 25 from exposed group) and zone B (n = 25 from reference group) was conducted to examine the association between thyroid hormone (TH) levels and PBDE, PCDD/F, and PCB exposures. Thyroid hormones TT3, TT4, and TSH levels were measured in maternal serum at 16 weeks of gestation. The concentrations of PBDEs, PCDD/Fs, and PCBs were determined by isotope dilution HRGC/HRMS in cord blood samples.

[Epidemiological studies on Clonorchis sinensis infection along the Zhujiang River in Lou village of Shenzhen].

Objective: To study the transmission route and epidemiological features of Clonorchis sinensis infection in Shenzhen area--the biggest immigration city of Southern China.

Methods: In this study, we examined 1473 individuals (710 males and 763 females) to determine the current status of C. sinensis infection among the people in one village in Zhujiang river region, Guangdong province, China.