| a case-control study of oral cancer in beijing, people's republic of china. associations with nutrient intakes, foods and food groups. | a case-control study of oral cancer was conducted in beijing, people's republic of china to examine the association between dietary nutrient intake and risk of oral cancer, both in terms of estimated intake of nutrients and micro-nutrients, and in terms of specific foods and food groups. the study was hospital-based and controls were hospital in-patients matched for age and sex with the cases. the response rate for cases and controls was 100% and 404 case/control pairs were interviewed. the resu ... | 1993 | 8180577 |
| [analysis of total mercury and methylmercury concentrations in four commercially important freshwater fish species obtained from beijing markets]. | the present paper makes an attempt to evaluate the risk of mercury exposure to human by analyzing the total mercury and methylmercury concentrations of four commercially important freshwater fish species in beijing market. | 2006 | 17290751 |
| perfluorooctane sulfonate (pfos) and other fluorochemicals in fish blood collected near the outfall of wastewater treatment plant (wwtp) in beijing. | perfluorinated compounds (pfcs) were measured in zooplankton and five fish species collected from gaobeidian lake, which receives discharge from wastewater treatment plant (wwtp) in beijing, china. the mean total pfcs in five fish were in the order: crucian carp>common carp>leather catfish>white semiknife carp>tilapia. perfluorooctane sulfonate (pfos) occurred at the greatest concentrations, with mean concentrations ranging from 5.74 to 64.2 ng/ml serum. perfluorodecanoic acid (pfda) was the sec ... | 2008 | 18439735 |
| trace elements in farmed fish (cyprinus carpio, ctenopharyngodon idella and oncorhynchus mykiss) from beijing: implication from feed. | concentrations of 30 trace elements, li, v, cr, mn, fe, ni, cu, mo, zn, se, sr, co, al, ti, as, cs, sc, te, ba, ga, pb, sn, cd, sb, ag, tm, ti, be, hg and u in major cultured freshwater fish species (common carp-cyprinus carpio, grass carp-ctenopharyngodon idella and rainbow trout-oncorhynchus mykiss) with the corresponding feed from 23 fish farms in beijing, china, were investigated. the results revealed that fe, zn, cu, mn, sr, se were the major accumulated essential elements and al, ti were t ... | 2016 | 26892032 |
| trophic transfer of mercury and methylmercury in an aquatic ecosystem impacted by municipal sewage effluents in beijing, china. | gaobeidian lake, located in beijing, china, serves as a recipient lake for effluents from a large municipal sewage treatment plant (mstp). in order to evaluate the effects of discharging mstp effluent on the mercury contamination of the local aquatic ecosystem, sediment cores, water, plankton, fish, and turtle samples were collected from gaobeidian lake for mercury speciation analysis. high concentrations of total mercury (t-hg) were detected in sediment cores (5.24-17.0 microg/g dry weight (dw) ... | 2010 | 21179957 |
| levels, distribution, and health risks of polycyclic aromatic hydrocarbons in four freshwater edible fish species from the beijing market. | we first estimated the content of polycyclic aromatic hydrocarbons (pahs) in the brain, liver, bladder, roe, and muscle of four species of edible freshwater fish from the beijing market. the distribution characteristics of pahs in these tissues and organs were analyzed to determine their health risks to humans. the results showed that the residual levels of wet weight and lipid-normalized weight ∑pahs in various tissues of these fish ranged from 0.51 ng·g(-1) to 28.78 ng·g(-1) and from 93.62 ng· ... | 2012 | 23365511 |
| accumulation and distribution of organophosphate flame retardants (pfrs) and their di-alkyl phosphates (daps) metabolites in different freshwater fish from locations around beijing, china. | organophosphate flame retardants (pfrs) can be rapidly metabolized in the body, and recent studies have shown that the di-alkyl phosphates (daps) are important metabolites. the accumulation and distribution of 8 pfrs and their 4 daps metabolites were first investigated in whole-body samples and various tissues of three freshwater fish species (topmouth gudgeon, crucian carp and loach) with different feeding habits from locations around beijing, china. concentrations of σpfrs in whole-body sample ... | 2017 | 28688305 |
| risk assessment of heavy metals in water and two fish species from golf course ponds in beijing, china. | to assess the situation of heavy metals contamination, the concentrations of cu, zn, pb, cd, cr, as and hg in water and two fish species (crucian carp and grass carp) from six golf course ponds of beijing were measured. differences in metals concentrations in water and fish samples were observed among different sites, but below the relevant standards and safety values. significant positive correlations were found between metals concentrations in water and fish samples, except for as in grass car ... | 2015 | 25636439 |
| [investigation of heavy metal contamination in four kinds of fishes from the different farmer markets in beijing]. | to understand the contamination level and the exposure risk of heavy metals in aquatic products in beijing, an inductively coupled plasma mass spectrometry (icp-ms) was applied to determine nine heavy metals including pb, cd, cr, as and so on in crucian carp, carp, grass carp and chub from the different farmer markets in beijing city. all of 96 samples were collected in this study. in them, the concentration of pb, cd, cr, cu, ni, mn, zn, fe, as are < 0.2 microg x kg(-1) -2.856 mg x kg(-1), < 0. ... | 2011 | 21922831 |