Anshan Environmental Monitoring Center

Liaoning, China

Anshan Environmental Monitoring Center

Liaoning, China
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Zhu W.,Jiaxing Petrochemical Co. | Yuan C.L.,Northeastern University China | Xie Y.H.,Northeastern University China | Ding L.,Anshan Environmental Monitoring Center | And 4 more authors.
Journal of Chemical and Pharmaceutical Research | Year: 2014

Struvite is an efficient slow-release compound fertilizer. Struvite precipitation method can not only remove phosphorus in wastewater, but also can recycle phosphorus in waste water and solve resource shortages problem. This article researches the effect of pH, contact time reaction, three crystal ions structures (Mg2+, NH4+, PO43-) ratio and Ca2+ on struvite precipitation and precipitation ingredients. The results show that when the pH was 9.5, the exposure reaction time was 20 min, the molar ratio of Mg2+: NH4+, PO43- was 1.2:2:1, and the molar ratio of Mg2+:Ca2+ is 1:0.5 or more, the phosphorus removing and recycling effect on high concentration of phosphorus wastewater is remarkable. © 2014, Journal of Chemical and Pharmaceutical Research. All Rights Reserved.


Xie Y.H.,Northeastern University China | Yu H.,Northeastern University China | Pan Y.H.,Northeastern University China | Li Q.,Northeastern University China | And 4 more authors.
Journal of Chemical and Pharmaceutical Research | Year: 2014

Nonylphenol polyethoxylates (NPEOs) is an important kind of nonionic surfactant widely used in the manufacturing and life of human beings. A second derivative ultraviolet spectrum method was established for the determination of the total NPEOs (the average n was 10) in microbial degradation water samples, and the optimal experimental conditions were studied. Water was used as the solvent. The derivative peaks of 283 nm and 288 nm were characteristic peaks, and the vertical distance of their culminations was used as the quantitative basis. Under the optimal experimental conditions, the standard curve of NPEOs was linear within the range of 1.8~440 μg/mL. The linear correlation coefficient was 0.9995, and the detection limit was 0.5 μg/mL. Actual NPEOs degradation water samples were determined. The recoveries of NPEOs ranged from 98.1% to 104.4% and the relative standard deviation varied from 1.9% to 2.1%. The results showed that the second derivative ultraviolet spectrum method was simple and fast, and was suitable for the determination of the total NPEOs in microbial degradation water samples. © 2014, Journal of Chemical and Pharmaceutical Research. All rights reserved.


Duan X.,Chinese Research Academy of Environmental Sciences | Shen G.,Jiangsu Academy of Environmental Sciences | Yang H.,Anshan Environmental Monitoring Center | Tian J.,Anshan Environmental Monitoring Center | And 3 more authors.
Chemosphere | Year: 2016

Dietary intake is one of the major exposure pathways of polycyclic aromatic hydrocarbons (PAHs), especially in Chinese people because foods are often prepared with grilling and/or frying that would produce high levels of PAHs. In this paper, we assessed daily dietary intakes (DDI) of PAHs, using a "duplicate plate method", among 100 Chinese urban residents. The DDI of benzo(a)pyrene ranged from 0.06 μg per day to 13.5 μg per day with a median of 0.69 μg per day, varying largely across subjects. The median Incremental Lifetime Cancer Risk (ILCR) attributable to PAH dietary intake was 6.65 × 10-5 (4.41 × 10-5 to 1.02 × 10-4 as inter-quartile range). The contribution of several high-PAH containing foods like barbecued, smoked or deep-fried meats to the overall DDIs was about 13%. The use of raw foods may underestimate dietary intake of PAHs and associated exposure risk considerably. Results from foods sampled in different seasons suggested that seasonal variability within an individual may contribute notably to overall variability measured in a population and more future studies with longer-term investigation on food ingestion and pollutant exposure are needed. The study indicates that measuring actually consumed foods is more appropriate for dietary intake exposure assessment, and intra-individual variance should be taken into account during study design and data analysis. © 2015 Elsevier Ltd.


PubMed | Anshan Environmental Monitoring Center, China National Environmental Monitoring Center, Duke University, Rutgers University and 2 more.
Type: Journal Article | Journal: Environmental pollution (Barking, Essex : 1987) | Year: 2015

Cytochrome P450 1A2 (CYP1A2) is an enzyme involved in the metabolic activation of certain carcinogens, and inducible by toxic substrates. To date, few studies have investigated in vivo CYP1A2 induction in humans and its relationship to polycylic aromatic hydrocarbons (PAHs) like benzo(a)pyrene (BaP). Non-smoking healthy male coke-oven workers (n = 30) were recruited as exposure group, and non-smoking healthy office workers in the same city (n = 10) were selected as control group, to test whether high inhalation exposure to PAHs can induce CYP1A2 activity in human livers. Significantly higher inhalation exposure of PAHs were found among the exposure group compared to the control. Inhalation BaP exposure concentration in the exposure group was more than 30 times higher than the control group (p < 0.001). However, the exposure group did not exhale significant higher levels of (13)CO2/(12)CO2 in breath samples (p = 0.81), and no significant relationship was found between the inhaled BaP concentration and the (13)CO2/(12)CO2 ratio (p = 0.91). A significant association was found between the (13)CO2/(12)CO2 exhalation and dietary BaP intake level. Hepatic CYP1A2 activity/induction level was not effected by inhaled BaP but was altered by ingestion of BaP.


PubMed | Duke University, Jiangsu Academy of Environmental Sciences, Chinese Research Academy of Environmental Sciences, China National Environmental Monitoring Center and Anshan Environmental Monitoring Center
Type: | Journal: Chemosphere | Year: 2015

Dietary intake is one of the major exposure pathways of polycyclic aromatic hydrocarbons (PAHs), especially in Chinese people because foods are often prepared with grilling and/or frying that would produce high levels of PAHs. In this paper, we assessed daily dietary intakes (DDI) of PAHs, using a duplicate plate method, among 100 Chinese urban residents. The DDI of benzo(a)pyrene ranged from 0.06 g per day to 13.5 g per day with a median of 0.69 g per day, varying largely across subjects. The median Incremental Lifetime Cancer Risk (ILCR) attributable to PAH dietary intake was 6.65 10(-5) (4.41 10(-5) to 1.02 10(-4) as inter-quartile range). The contribution of several high-PAH containing foods like barbecued, smoked or deep-fried meats to the overall DDIs was about 13%. The use of raw foods may underestimate dietary intake of PAHs and associated exposure risk considerably. Results from foods sampled in different seasons suggested that seasonal variability within an individual may contribute notably to overall variability measured in a population and more future studies with longer-term investigation on food ingestion and pollutant exposure are needed. The study indicates that measuring actually consumed foods is more appropriate for dietary intake exposure assessment, and intra-individual variance should be taken into account during study design and data analysis.


Li X.,CAS Research Center for Eco Environmental Sciences | Li Y.,CAS Research Center for Eco Environmental Sciences | Zhang Q.,CAS Research Center for Eco Environmental Sciences | Wang P.,CAS Research Center for Eco Environmental Sciences | And 3 more authors.
Chemosphere | Year: 2011

The concern about emissions of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) polychlorinated biphenyls (PCBs), and polybrominated diphenyl ethers (PBDEs) from steel industrial parks has increased in the past decades. In this study, polyurethane foam (PUF)-disk based passive air samples were collected in and around a big steel industrial park of Anshan, Northeast China from June 2008 to March 2009. The levels, seasonal variations and potential sources of PCDD/Fs, PCBs and PBDEs in the atmosphere around the steel industrial complex were investigated, and potential contribution of these three groups of persistent organic pollutants (POPs) from iron and steel production was also assessed. The air concentrations of ∑17PCDD/Fs (summer: 0.02-2.77pgm-3; winter: 0.20-9.79pgm-3), ∑19PCBs (summer: 23.5-155.8pgm-3; winter: 14.6-81.3pgm-3) and ∑13PBDEs (summer: 2.91-10.7pgm-3; winter: 1.10-3.89pgm-3) in this targeted industrial park were relatively low in comparison to other studies, which implied that the industrial activities of iron and steel had not resulted in serious contamination to the ambient air in this area. On the whole, the air concentrations of PCDD/Fs in winter were higher than those of summer, whereas the concentrations of PCBs and PBDEs showed opposite trends. The result from principal component analysis indicated that coal combustion might be the main contributor of PCDD/F sources in this area. © 2011 Elsevier Ltd.


Li Y.,CAS Research Center for Eco Environmental Sciences | Wang P.,CAS Research Center for Eco Environmental Sciences | Ding L.,CAS Research Center for Eco Environmental Sciences | Li X.,CAS Research Center for Eco Environmental Sciences | And 5 more authors.
Chemosphere | Year: 2010

Air monitoring of polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and dioxin-like polychlorinated biphenyls (PCBs) was carried out in June 2008 and January 2009 to investigate the concentrations, profiles and estimating potential inhalation risks to the local residents around a steel plant area in northeast China. The air concentrations and WHO-TEQs of PCDD/Fs ranged 94-4944 fg m-3 (average 1352 fg m-3) and 3-247 fg m-3 (average 81 fg m-3), respectively. The WHO-TEQ concentrations of dioxin-like PCBs ranged 1-18 fg m-3 (average 5 fg m-3), contributing to 3.6-26% of the total TEQ. Higher PCDD/F concentrations were observed in the winter, whereas higher dioxin-like PCB concentrations were found in the summer. The seasonal trend can be related to the significant correlation between the concentrations of dioxins and the reciprocal of temperature (positive for PCDD/Fs, P < 0.01; negative for dioxin-like PCBs, P = 0.05). A significant positive correlation (P < 0.0001) was found between the concentration of total suspended particulate (TSP) and PCDD/F concentrations, but not for PCB congeners. Although the steel plant sites showed higher dioxin levels than the residential and background areas, the PCDD/F levels in the atmosphere of the steel plant area was at a relatively low level. The results from this study provides further aid in evaluating the impact of steel plants as PCDD/Fs emission sources to the ambient air in China. Crown Copyright © 2010.


Xie Y.,Northeastern University China | Pan Y.,Sinosteel Anshan Research Institute of Thermo Energy Co. | Bai B.,Northeastern University China | Xu Z.,Northeastern University China | And 4 more authors.
Journal of Computational and Theoretical Nanoscience | Year: 2015

Two bacteria as Pseudomonas Putida and Citrobacter Freundii were selected to degrading nonyphenol (NP). The degradation performance and the optimal parameters were investigated. The results showed that the optimal parameters were culture temperature of 30 C, initial culture medium pH of 6~7, initial NP dosage of 5 μg/mL, initial bacteria dosage of 2% (V/V) and co-metabolic substrate of 2.0 mg/mL peptone. Under the optimal parameters, the highest degradation efficiencies were 49% and 50% for Pseudomonas Putida and Citrobacter Freundii, respectively. The degradation mainly occurred in the first 36 hrs. The mixture of two bacteria presented mutual promotion effect in degrading NP. The optimal ratio of Pseudomonas Putida to Citrobacter Freundii, was 3:2 and the highest NP degradation efficiency achieved about 53%. © 2015 American Scientific Publishers All rights reserved.


Xie Y.,Northeastern University China | Li X.,Northeastern University China | Chai T.,Northeastern University China | Ren J.,Northeastern University China | And 4 more authors.
Desalination and Water Treatment | Year: 2015

Abstract: A metal membrane and a polyethersulfone (PES) membrane were compared in this study. The surface morphology, inherent resistance, and critical flux of the membranes were first investigated. The two membranes were then placed in an activated sludge reactor to treat municipal sewage. The two membranes showed similar removal efficiencies of chemical oxygen demand (COD), ammonia, and total nitrogen (TN). The average effluent COD removal efficiencies, effluent ammonia, and effluent TN removal efficiencies were approximately 94.00%, 0.19 mg/L, and 28.22%, respectively. The metal membrane showed lower inherent membrane resistance of 0.27 × 1011 m−1, higher critical flux of 0.7 m3/(m2d), higher anti-fouling ability, and slower transmembrane pressure increasing rate compared with the PES membrane. The main fouling mechanism of the metal membrane was cake formation, whereas that of the PES membrane was pore blocking. The metal membrane was easy to recover after fouling. The results of the study suggest that the metal membrane can be potentially applied in a membrane bioreactor. © 2014 Balaban Desalination Publications. All rights reserved.


Liang J.,Shenyang University of Technology | Yu J.,Esteve Huayi Pharmaceutical Co. | Cui L.,Shenyang University of Technology | Wang X.,Shenyang University of Technology | And 4 more authors.
2011 International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2011 - Proceedings | Year: 2011

The treatment of high concentration organic wastewater by microwave Fenton process was studied in this paper. The input volume of Fenton reagent, microwave power, reaction time, initial pH value is investigated to study the impact of the effect of the high concentration organic wastewater treatment. The optimum condition of Microwave-Fenton oxidation is: the pH reaching 3, Fenton reagent composition ratio of n(H2O2):n(Fe2+) being 75:1, the volume ratio of Fenton reagent and waste water being 1:10, the microwave power reaching 640W, accompanied by medium speed magnetic stirring, microwave irradiation time reaching 10min.The removal rate of COD is 83.05%, the removal rate of colority reached 100%. © 2011 IEEE.

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