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《Journal of Gansu Normal Colleges》 2010-05
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Analysis and Research on Drinking Water Hardness in Main Zone of Dingxi City

ZHAO Ming(Department of Biology and Chemistry,Dingxi Teachers College,Dingxi Gansu 743000)  
Water hardness is an important index to indicate water quality.Total quality of calcium salts and Magnesium Salts are e-quivalent to 10mgCaO,namely 1°.Under 8° is softon water,8-16° is intermediate water,over 16° is hard water,more than 16° is ex-tremely hard water.Water Hardness breaks into,the sum of them namely total hardness of water.This work measure and analysis res-ident drinking water hardness in main zone of Dingxi city main using EDTA titrate method.Through measuring,total hardness of wa-ter this zone is 10.40°,permanent hardness is 7.00°,impermanent hardness is 3.40°.According to standard of water hardness,resident drinking water hardness in main zone of Dingxi city is intermediate water.
【CateGory Index】: R123.1
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Chinese Journal Full-text Database 5 Hits
1 ;Estimating Total Hardness in Natural Water[J];Environmental Protection Science;1998-02
2 YU Bao-jie~(1),YU Bao-hui~(2),CHENG Feng-mei~(1),JIN Jing-xue~3(1.School of Biological Engineering, Changchun University of Technology, Changchun 130012, China;2.Meihekou Environmental Protection Bureau, Meihekou 135000, China;3.The Water Resures and Hydropower Investigation Design and Research Institute of Jilin Province, Changchun 130021, China);An Improvement of the Testing Method for Determining the Hardness of Water[J];Journal of Changchun University of Technology;2004-03
3 YANG Li-ping;Research on Softening the Hardness of Drinking Water[J];Jiangsu Environmental Science and Technology;2008-S1
4 He Hong Department of Food,Bengbu Higher Junior College\ Bengbu\ 233030 Xi Qian Bengbu No.3 People’s Hospital\ Bengbu\ 233000;The hardness of water and health[J];BEVERAGE INDUSTRY;1999-05
5 WEI Zheng-yan,LI Jin-xia(1.Department of Chemistry,,Xinxiang Teachers College,Henan Xinxiang, 453000; 2.Jiaozuo City No.6 Middle School);Determination of Water Hardness by Spectrophotometry[J];Journal of Xinxing Teachers College;2001-01
Chinese Journal Full-text Database 10 Hits
1 XU Wei et al(School of Life Science,Liaocheng University,Liaocheng,Shandong 252059);Change of Biogenic Amines Content during Fermentation of Fish Sauce from Squid Processed Wastes[J];Journal of Anhui Agricultural Sciences;2010-04
2 HAN WeiYan1 GONG Ping1 TIAN PingFang2(1.Biological and Chemical College of Beijing Union University,Beijing 100023;2.College of Life Science and Technology,Beijing University of Chemical Technology,Beijing 100029,China);Structure and properties of modified superoxide dismutase[J];Journal of Beijing University of Chemical Technology(Natural Science Edition);2010-02
3 WANG Qi(Henan Institute of Engineering,Zhengzhou 450007,China);Influence of Water Hardness on Wettability of Offset[J];Packaging Engineering;2009-07
4 SUN Guangqing1, WANG Lei2(1.Dept of Automatic Control,Northwestern Polytechnic University,Xi'an 710072,China;2.ChineseGerman Coll,Tongji University,Shanghai 200092,China);Application of optical sensor arrays in water hardness determining[J];Journal of Transducer Technology;2003-02
5 YIN Qingqiang1,2 LI Xiaofei1 CHANG Juan1 ZHENG Qiuhong1YANG Yurong1 ZUO Ruiyu1 LIU Junxi2(1.College of Animal Science and Veterinary Medicine,Henan Agricultural University,Zhengzhou 450002 China;2.Henan Engineering &Technology Research Center of Feed Microbiology,Zhoukou 466000,China);Probiotics: Effects on Performance and Mechanisms of Action in Suckling and Weaner Piglets[J];Chinese Journal of Animal Nutrition;2011-04
6 XIE Wang (School of Mechanic and Electronic Engineering Tianjin Polytechnic University,Tianjin 300160);The new development and application of photoelectrical sensor technology[J];Electronics Instrumentation Customer;2005-05
7 ZHOU Zhi-minga,b,YIN Cheng-zhia,b,WANG Meng-qina,b,Su Qi-quana,b (a.College of Chemistry;b.Chemical Engineering,Chongqing University,Chongqing 400030,P.R.China);Using co-immobilized saccharifying enzymes and yeast fermentation of high-concentration cassava starch mash to produce alcohol[J];Journal of Chongqing University;2009-06
8 Deng Maihua (Longyan Environmental Monitoring Station,Longyan,Fujian 364000,China);Determination of water hardness with Ion Chromatography[J];Fujian Analysis & Testing;2007-01
9 OUYANG Hai-ping,XU Er-ni,LIU Wei,PENG Yang (The Key Laboratory of Food Science MOE,Nanchang University,Nanchang Jiangxi 330047);Bovine rumen fluid microflora in the decomposition of pentose Purification Research[J];Journal of Gannan Medical University;2010-02
10 Li qian Ma Xiao - mei Tang De - yuan (School of Chemistry and Chemical Engineering,Guizhou University,Guiyang,Guizhou,550003);Theory and Practice of Precipitation Method of Separating Magnesium[J];Guizhou Chemical Industry;2010-02
【Secondary Citations】
Chinese Journal Full-text Database 5 Hits
1 Dong Huiru Zhu Hongbo Wang Chunjuan (Liaoyang Petro-chemical Special College,Liaoyang,111003) Jiang Meiyu (Liaohua Oil Refinery);Simultaneous Determination of Calcium,Magnesium and Iron by Spectrophotometric Method[J];Chinese Journal of Analytical Chemistry;1991-04
2 ZHENG Hong,WU Yu tian and FANG Hui sheng (Department of Pharmaceutical Analysis,College of Pharmacy,Sencond Military Medical University,Shanghai 200433),Fenxi Shiyanshi,2000,19(3):8~11;Application of Convolution Curve Method for Simultaneous Determination of Magnesium and Calcium in Serum[J];ANALYTICAL LABORATORY;2000-03
3 Gao Fengguang;Determing Water Hardness with the Atomic Absorption Method[J];Metrology and Measurement Technique;2003-05
4 Jiang Li-juan, Wei Jiang-rong (Beijing Municipal Center for Disease Control and Prevention, Beijing 100013,China);On-line determination of hardness in drinking wanter by potentiometer[J];Chinese Journal of Health Laboratory Technology;2005-05
5 GAO Cong-jie, CHEN Yi-tang (Research and Development Center of Water Treatment Technology, SOA, Hangzhou 310012, China);Nanofiltration membrane and its application[J];The Chinese Journal of Nonferrous Metals;2004-S1
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