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Zheng Zhang, Yong Qin
Coalbed natural gas (CBNG) is an important unconventional natural gas resource with large reserves in China and receives much attention these years. The CBNG production is accomplished by extracting large volumes of produced water from the aquifer. The CBNG-produced water is commonly managed by discharging into nearby disposal ponds in the Southern Qinshui Basin (SQB), which provides an opportunity for water source for nearby irrigation, livestock, wildlife, and human drinking water. However, utilization of this nontraditional water source in the SQB is hindered by limited knowledge of water quality, practically oxidation/reduction potential (OPR), electrical conductivity (EC), sodium adsorption ration (SAR), and trace element chemistry data...
May 21, 2018: Environmental Science and Pollution Research International
Huma Ajab, John Ojur Dennis, Mohd Azmuddin Abdullah
A novel synthesis and characterization of cellulose, hydroxyapatite and chemically-modified carbon electrode (Cellulose-HAp-CME) composite was reported for the analysis of trace Pb(II) ions detection and its validation in blood serum. The Field Emission Scanning Electron Microscopy (FESEM) analyses showed that the composite retained the orderly porous structure but with scattered particle size agglomeration. The Fourier Transform Infrared Spectroscopy (FTIR) spectra suggested the presence of functional groups associated with the bending and stretching of carbon bonds and intermolecular H-bonding...
July 1, 2018: International Journal of Biological Macromolecules
Miaomiao Bao, Liping Huo, Jiong Wu, Delong Ge, Zhenming Lv, Changfeng Chi, Zhi Liao, Huihui Liu
Bivalves use anti-oxidative enzyme systems to defend themselves against excessive reactive oxygen species, which are often catalyzed by environmental pollution. As a key member of anti-oxidative enzyme family, catalase plays a crucial role in scavenging the high level of reactive oxygen species to protect organisms against various oxidative stresses. In this study, a catalase homologue was identified from Mytilus coruscus (named McCAT, KX957929). The open reading frame of McCAT was 1844bp with a 5' untranslated region of 341bp and a 3' untranslated region of 927bp...
February 2018: Marine Pollution Bulletin
Zhenyuan Zhu, Qiaoying Song, Fengying Dong
The objective of this study was to investigate the screening, taxonomy characterization, Pb biosorption, and application of the high Pb-resistant fungus F1 separated from the heavy metal contaminated soil. Fungus F1 was screened through metal concentration gradient ranging from 25 to 4000 mg L-1 . The internal transcribed spacers (ITS) of the strain was analyzed by molecular biotechnology. The adsorption conditions were also evaluated. The precipitation of fungus F1 was analyzed by Scanning Electron Microscopy (SEM), Fourier transformer infrared spectroscopy (FTIR) and energy dispersive X-ray (EDX) techniques...
April 2018: Journal of Basic Microbiology
Ranran Zhao, Yuelian Wu, Fangfang Zhao, Yingnan Lv, Damin Huang, Jinlian Wei, Chong Ruan, Mingli Huang, Jinghuan Deng, Dongping Huang, Xiaoqiang Qiu
To assess the association between exposure to the tobacco, heavy metals and phthalate on early pregnancy and missed abortion.42 women with missed abortion and 57 matched controls (women with normal pregnancies) were recruited between March and May 2012, from the Department of Gynecology and Obstetrics, First Affiliated Hospital of Guangxi Medical University and the People Hospital of Guangxi Zhuang Autonomous Region. The questionnaire survey was carried on to learn about the basic conditions, as well as smoking history of all participants...
December 2017: Medicine (Baltimore)
Jinxian Liu, Cui Li, Juhui Jing, Pengyu Zhao, Zhengming Luo, Miaowen Cao, Zhuanzhuan Ma, Tong Jia, Baofeng Chai
Environmental gradient have strong effects on community assembly processes. In order to reveal the effects of alkaline mine drainage (AlkMD) on bacterial and denitrifying bacterial community compositions and diversity in tailings reservoir, here we conducted an experiment to examine all and core bacterial taxa and denitrifying functional genes's (nirS, nirK, nosZΙ ) abundance along a chemical gradient in tailings water in Shibahe copper tailings in Zhongtiaoshan, China. Differences in bacterial and denitrifying bacterial community compositions in different habitats and their relationships with environmental parameters were analyzed...
April 15, 2018: Water Research
Guang-Min Liu, Qing An, Li-Juan Wang, Xin Jia, Si-Hui Feng, Shu-Mei Xia, Yi-Ning Wu, Hong Qi
To estimate the pollution of As and Pb in the Songhua River which flows through the major rice-producing regions in China, the present study investigated the level and release of As and Pb in surficial sediments which collected from nine sites in Songhua River (M1 -M9 ). The concentration of As and Pb was ranged as follows: As = 3.104~15.01 μg/g, Pb = 20.10~37.42 μg/g; the average concentration: As = 6.466 ± 3.077 μg/g, Pb = 28.88 ± 5.077 μg/g. By analysis vertically, the average concentration of As was 5...
January 2018: Environmental Science and Pollution Research International
Chi Kim Lim, Ta Wee Seow, Chin Hong Neoh, Muhamad Hanif Md Nor, Zaharah Ibrahim, Ismail Ware, Siti Hajar Mat Sarip
Sanitary landfilling is the most common way to dispose solid urban waste; however, improper landfill management may pose serious environmental threats through discharge of high strength polluted wastewater also known as leachate. The treatment of landfill leachate to fully reduce the negative impact on the environment, is nowadays a challenge. In this study, an aerobic sequencing batch reactor (ASBR) was proposed for the treatment of locally obtained real landfill leachate with initial ammoniacal nitrogen and chemical oxygen demand (COD) concentration of 1800 and 3200 mg/L, respectively...
December 2016: 3 Biotech
Mohammed Abdulrazzaq Assi, Mohd Noor Mohd Hezmee, Abd Wahid Haron, Mohd Yusof Mohd Sabri, Mohd Ali Rajion
Lead, a chemical element in the carbon group with symbol Pb (from Latin: Plumbum, meaning "the liquid silver") and has an atomic number 82 in the periodic table. It was the first element that was characterized by its kind of toxicity. In animal systems, lead (Pb) has been incriminated in a wide spectrum of toxic effects and it is considered one of the persistent ubiquitous heavy metals. Being exposed to this metal could lead to the change of testicular functions in human beings as well as in the wildlife. The lead poising is a real threat to the public health, especially in the developing countries...
June 2016: Veterinary World
Ning Li, Guojun Yang, Yueying Wang, Mingwu Qiao, Pingan Zhang, Jianfeng Shao, Guoyu Yang
As the abbreviation of plumbum and a chemical symbol for lead, Pb produces neurotoxic effects, which result into an impairment of learning and memory and other neurological dysfunctions. However, the mechanism of neurotoxicity of Pb exposure is unclear. The present study was undertaken to investigate the effects of maternal lead exposure on expression of insulin-degrading enzyme (IDE),insulin-like growth factor 2 (IGF2) and beta amyloid protein 40 (Aβ40) in the cerebral cortex of mice offspring. Lead exposure initiated from beginning of gestation to weaning...
March 2016: Brain Research Bulletin
Jin-Tao Liu, Bei-Yu Chen, Jie-Qiong Zhang, Fang Kuang, Liang-Wei Chen
Proper proliferation and differentiation of neural stem cells or progenitors in hippocampus is critical to learn and memory functions, which might be disturbed by lead toxicity particularly in young individuals. While astroglial and microglial cells are known to play an important role in regulating neurogenesis of hippocampus, their abnormal response and influence on hippocampal neurogenesis remains unclear. In this study, therefore, glial response including microgliosis, astrogliogenesis and mediating involvement of TLR4-MyD88-NFκB signaling cascades were observed in hippocampus of young mice by animal model with lead (plumbum, Pb) exposure...
December 3, 2015: Toxicology Letters
Bonan Sun, Mingwei Xing
This study assessed the impacts of dietary arsenic trioxide on the contents of 26 elements in the pectoral muscle of chicken. A total of 100 Hy-line laying cocks were randomly divided into two groups (n = 50), including an As-treated group (basic diet supplemented with arsenic trioxide at 30 mg/kg) and a control group (basal diet). The feeding experiment lasted for 90 days and the experimental animals were given free access to feed and drinking water. The elements lithium (Li), boron (B), natrum (Na), magnesium (Mg), aluminium (AI), silicium (Si), kalium (K), calcium (Ca), vanadium (V), chromium (Cr), manganese (Mn), ferrum (Fe), cobalt (Co...
February 2016: Biological Trace Element Research
Qiu-Ju Jiang, Yue-Qiang Zhang, La-Mei Zhang, Xin-Bin Zhou, Xiao-Jun Shi
The study focused on the change of microbial characteristics affected by Plumbum pollution with purple paddy soil in an incubation experiment. The results showed that low concentration of Plumbum had little effect on most of microbial amounts, biological activity and enzymatic activity. However, denitrifying activity was inhibited severely, and inhibition rate was up to 98%. Medium and high concentration of Plumbum significantly reduced the amounts and activity of all microorganisms and enzymatic activity, which increased with incubation time...
May 2014: Pakistan Journal of Pharmaceutical Sciences
Xiong Wan, Jian-Yu Wang, Jian-Hua Ye, Peng Wang, Zhi-Min Zhang
Environmental pollution can cause poisoning, disease and death of organisms, and the absorption and the accumulation of different biological tissues on pollutants are different. The absorption of heavy metal elements of various biological tissues on pollutants is an important biomedical research problem. In the present paper, a laser induced breakdown spectroscopy (LIBS) method was used to quantitatively analyze heavy metal elements in various tissues of some contaminated fish samples. Optimal experimental parameters were obtained in the LIBS experiments for these fish samples, calibration curves for plumbum and barium elements were fitted and the contents of heavy metal elements were determined with the external calibration approach...
January 2013: Guang Pu Xue Yu Guang Pu Fen Xi, Guang Pu
Fang-fang Wen, Li-ming Zheng, Xiao-jing Li, Yan Li, Lei Zhang, Xue-mei Cheng, Chang-hong Wang, Zheng-taou Wang
OBJECTIVE: To establish the quality standards of the herbs of Peganum harmala. METHOD: According to the Chinese Pharmacopoeia (2010 version, volume 1) and its appendix method, the water, total ash, acid insoluble ash, water-soluble extractives, and heavy metal were analyzed for herbs of P. harmala. TLC method was used to separate harmaline, harmine and vasicine from the herb samples by mixture of ethyl acetate-methanol-ammonia (10: 1.5: 0.5) as a developing solvent on high performance silica gel precoated plate (HSGF254) and to identify them inspected under UV 366 nm, visualized by spraying with both Dragendorff reagent, and by bioautographic assay...
October 2012: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
Xiaochun Sun, Yan Xie, Lele Wu, Wei Zhu, Jiabo Hu, Rongzhu Lu, Wenrong Xu
Plumbum (Pb) is a heavy metal toxin that causes many pathophysiological effects in various systems of the human body. It has previously been reported that excessive lead trioxide causes hematopoietic system toxicity. Mesenchymal stem cells (MSCs), as cells with self-renewal and multipotent differentiation potential, play a supportive role in hematopoietic function. Lead is well known to interfere with hemoglobin synthesis and affect erythrocyte morphology and survival. MSCs and the cytokines secreted by MSCs are the important components of the hematopoietic microenvironment...
October 2012: Molecular Medicine Reports
Yang Bai, Yan-yi Wang, Lei Zhang, Rong-fa Bu
OBJECTIVE: To investigation the shielding property to (125)I of several different prosthetic materials used in clinical when prostheses are used as carriers of (125)I seed in tumor treatment. METHODS: (125)I seeds were taken as the radiation sources to establish a model in vitro and the radiation doses were measured by thermoluminescent dosemeters (TLD). The shielding property of titanium plate, cochrome plate, and poly methyl methacrylate (PMMA) plate were detected, calculated and compared with that of plumbum plate in the control group...
August 2011: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
Liang Zhao, Zhimin Wang, Huimin Gao, Qiwei Zhang
OBJECTIVE: To remove plumbum ion from the extract of Lonicera japonica by gamma-mercaptopropyl-modified silica gel (MPS). METHOD: The reference plumbum ion solution was added into the extract of L. japonica as the tested samples. The static and dynamic adsorptions were investigated to evaluate the influent factors on the removal of plumbum ion in the extract. The solid content and HPLC profiles of the extract were determined to evaluate the process changes. RESULT: MPS showed excellent adsorption charateristics to remove plumbum ion from the extract of L...
May 2011: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
Roberto Queiroz Padilha, Rachel Riera, Alvaro Nagib Átallah
INTRODUCTION: Poisoning due to lead and its compounds has short and long-term effects primarily on the nervous, hematopoietic, gastrointestinal, cardiovascular, musculoskeletal, renal and reproductive systems. It can manifest in acute or chronic symptoms. Measuring serum concentration is the primary method for diagnosing and monitoring exposed workers. Presently, elevated lead levels are treated by drugs whose effectiveness is contested on various fronts. Experimental studies suggest that homeopathic preparations may be in controlling blood lead levels in laboratory animals, creating the need for controlled studies to evaluate the effectiveness and safety of these preparations in humans...
July 2011: Homeopathy: the Journal of the Faculty of Homeopathy
Inga Krzywy, Edward Krzywy, Magdalena Pastuszak-Gabinowska, Andrzej Brodkiewicz
Lead (PB, latin name plumbum) is a heavy metal commonly found in nature. In the environment it is not biodegradable nor does it undergo dissociation. It can accumulate in the tissues of living organisms. Throughout the years the attitude towards lead has changed. Once widely used, currently considered a big threat to the health ofa human. The development of civilization and associated with it an increase of lead emission contributes to a major contamination of the natural Pb environment. The authors have focused attention on the causes and effects on the environmental contamination of lead on human health...
2010: Annales Academiae Medicae Stetinensis
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