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19世纪中国环境还是蓝天白云，青山绿色，到了20世纪中国环境出现翻天翻地的变化，水被重金属、抗生素农药污染了、空气中臭气氧层破坏出现雾霾等现象、食物出现苏丹红、三聚氰胺等。在这种恶劣自然环境下，为了广大人们能喝上优质放心水，公司创始人在2000年吸取前人的宝贵经验开始研究。他先去广西长寿村巴马县调研此处水质，经过长时间研究找出重要原因，原来此处地理位置处于高磁地带，使此处的水是与其他地区有所不同。
水分子H2O，是由两个氢原子和一个氧原子组成，正常的水是由13—15个水分子组成，称为大分子团水，频率在140-150HZ之间。世界卫生组织规定进入100HZ以内，每个水分子团由5-7个水分子组成，就称之为小分子团水。胎儿的羊水就是小分子团水。
自来水厂添加的杀菌消毒剂—漂白粉（氯），为避免发生运输过程中的水媒传染病，自来水厂在净水处理的过程中就会加多消毒剂，由于氯的性价比高，在国内的水处理行业广泛应用。从而多余的氯就是余氯。余氯又分为化合性余氯和游离性余氯。60%的人类癌症与自来水中的余氯有关。
1、目前我国自来水消毒杀菌的主要方式是什么？
答：是氯气杀菌。
微信公众号喝WaterSource的净水机的水真能减少生病吗？_百度知道
喝WaterSource的净水机的水真能减少生病吗？
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系统奖励15（财富值+成长值）+难题奖励20（财富值+成长值）
能不能减少生病我不知道，但是我用过后皮肤确实变好了，但是没感觉出来对生病也有影响。
擅长：暂未定制
不能完全否定，但是它可以减少一些可能对人体造成危害的细菌，当然如果你一直喝这里面的水，对自身也有危害。
不能，除非是你原来的水里边有能让你生病的因素。
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我们会通过消息、邮箱等方式尽快将举报结果通知您。you need to have a water source under the block t_百度知道
you need to have a water source under the block t
youneedtohaveawatersourceundertheblockthetapisontouseit....
you need to have a water source under the block the tap is on to use it.
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我们会通过消息、邮箱等方式尽快将举报结果通知您。Evaluation of nitrate source in surface water of southwestern China based on stable isotopes | SpringerLink
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Evaluation of nitrate source in surface water of southwestern China based on stable isotopesSi-Liang LiCong-Qiang LiuJun LiZicheng XueJin GuanYunchao LangHu DingLongbo LiOriginal Article
Stable isotope tracing and analysis play an important role in interpretation of hydrological and ecological processes at the watershed scale and can provide information regarding the flow path, water source, nutrient loss and biogeochemical cycles of a system. In this study, environmental isotopes (δ18O-H2O, δD, δ15N-NO3 -, δ18O-NO3 -) and chemical compositions of surface water in Guizhou Province, China, were measured to evaluate the primary sources of nitrate and characterize the processes affecting nitrate as well as its correlation with vegetation cover in karstic areas. The δ15N and δ18O-NO3 - levels ranged from +1.3 to +9.8 ‰ and +4.7 to +16.9 ‰, respectively, which indicated that nitrate in water from the investigated area primarily originated from nitrification of soil organic matter during the sampling period. There was also a wide range of isotopes in the water and high contents of nitrate in karstic areas with poor vegetation cover, indicating that water and nutrient loss were serious problems hindering plant growth in the study areas. For example, there was a positive relationship between isotopic composition and nitrate content in the natural forest and negative relationship in Libo County nearby, which suggested that the nitrate fate was affected by land use and human disturbance.Nitrate Stable isotopes Vegetation cover Water chemistry This is a preview of subscription content,
to check access.We thank Dr. Khan Mostofa and anonymous reviewers for giving comments and suggestions. This work was financially supported by Chinese Academy of Sciences through grants KZCX2-YW-137 and, KZCX2-EW-102, by Ministry of Science and Technology of China through Grant
and by National Natural Science Foundation of China through Grants .Amberger A, Schmidt HL (1987) Naturliche isotopengehalte von nitrat als indikatoren fur dessen Herkunft. Geochim Cosmochim Acta 51:Andersson KK, Hooper AB (1983) O2 and H2O are each the source of one O in NO2
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Cao J, Yuan D, Zhang C, Jiang Z (2004) Karst ecosystem constrained by geological conditions in Southwest China. Earth Environ 32:1–8 (in Chinese)Chang CCY, Kendall C, Silva SR, Battaglin WA, Campbell DH (2002) Nitrate stable isotopes: tools for determining nitrate sources among different land uses in the Mississippi River Basin. Can J Fish Aquat Sci 59:Chen F, Jia G, Chen J (2009) Nitrate sources and watershed denitrification inferred from nitrate dual isotopes in the Beijiang River, south China. Biogeochemistry 94:163–174Clark ID, Fritz P (1997) Environmental isotopes in hydrogeology. Lewis, New YorkCraig H (1961) Isotopic variation in meteoric waters. Science 133:Durka W, Schulze ED, Gebauer G, Voerkelius S (1994) Effects of forest decline on uptake and leaching of deposited nitrate determined from 15N and 18O measurements. Nature 372:765–767Granger J, Sigman DM, Rohde MM, Maldonado MT, Tortell PD (2010) N and O isotope effects during nitrate assimilation by unicellular prokaryotic and eukaryotic plankton cultures. Geochim Cosmochim Acta 74:Han ZJ, Jin ZS (1996) Hydrogeology of Guizhou Province, China. Seismic Publication, Beijing (in Chinese)Han GL, Liu C-Q (2006) Strontium isotope and major ion chemistry of the rainwaters from Guiyang, Guizhou Province, China. Sci Total Environ 364:165–174Heaton THE (1986) Isotopic studies of nitrogen pollution in the hydrosphere and atmosphere: a review. Chem Geol 59:87–102IAEA/WMO (2006) Global network of isotopes in precipitation. The GNIP database.
Jiang Y, Wu Y, Yuan D (2009) Human impacts on karst groundwater contamination deduced by coupled nitrogen with strontium isotopes in the Nandong underground river system in Yunnan, China. Environ Sci Technol 43(20):Johannsen A, D?hnke K, Emeis K (2008) Isotopic composition of nitrate in five German rivers discharging into the North Sea. Org Geochem 39:Kendall C (1998) Tracing nitrogen sources and cycling in catchments. In: Kendall C, McDonnell JJ (eds) Isotope tracers in catchment hydrology. Elsevier, Amsterdam, pp 519–576Kendall C, Elliott EM, Wankel SD (2007) Tracing anthropogenic inputs of nitrogen to ecosystems. In: Michener RH, Lajtha K (eds) Stable isotopes in ecology and environmental science, 2nd edn. Blackwell, OxfordLi S-L, Liu C-Q, Li J, Liu X, Chetelat B, Wang B, Wang F (2010) Assessment of the sources of nitrate in the Changjiang River, China using a nitrogen and oxygen isotopic approach. Environ Sci Technol 44(5):Liu C-Q, Li S-L, Lang Y-C, Xiao H-Y (2006) Using δ15N- and δ18O-values to identify nitrate sources in karst ground water, Guiyang, Southwest China. Environ Sci Technol 40(22):Mayer B, Bollwerk SM, Mansfieldt T, Hütter B, Verzer J (2001) The oxygen isotope composition of nitrate generated by nitrification in acid forest floors. Geochim Cosmochim Acta 65:Mayer B, Boyer EW, Goodale C, Jaworski NA, Van Bteemen N, Howarth RW, Seitzinger S, Billen G, Lajtha LJ, Nosal M, Paustian K (2002) Sources of nitrate in rivers draining sixteen watersheds in the northeastern US: isotopic constraints. Biogeochemistry 57(58):171–197Mengis M, Schiff SL, Harris M, English MC, Aravena R, Elgood RJ, Maclean A (1999) Multiple geochemical and isotopic approaches for assessing ground water NO3
- elimination in a riparian zone. Ground Water 37:448–457Mengis M, Walther U, Bernasconi SM, Wehrli B (2001) Limitations of using δ18O for the source identification of nitrate in agricultural soils. Environ Sci Technol 35(9):Michener R, Lajtha K (2007) Stable isotopes in ecology and environmental science, 2nd edn. Blackwell, OxfordOhte N, Tayasu I, Kohzu A, Yoshimizu C, Osaka K, Makabe A, Koba K, Yoshida N, Nagata T (2010) Spatial distribution of nitrate sources of rivers in the Lake Biwa watershed, Japan: controlling factors revealed by nitrogen and oxygen isotope values. Water Resour Res 46. doi:
Panno SV, Kelly WR, Hackley KC, Hwang H–H, Martinsek AT (2008) Sources and fate of nitrate in the Illinois River Basin, Illinois. J Hydrol 359(1/2):174–188Pardo LH, Kendall C, Pett-Ridge J, Chang CCY (2004) Evaluating the source of streamwater nitrate using δ15N and δ18O in nitrate in two watersheds in New Hampshire, USA. Hydrol Process 18(14):Pu J, Yuan D, He Q, Wang Z, Hu Z, Gou P (2011) High-resolution monitoring of nitrate variations in a typical subterranean karst stream, Chongqing, China. Environ Earth Sci 64:Révész K, B?hlke J-K (2002) Comparison of δ18O measurements in nitrate by different combustion techniques. Anal Chem 74:Sebilo M, Billen G, Mayer B, Billiou D, Grably M, Garnier J, Mariotti A (2006) Assessing nitrification and denitrification in the Seine River and estuary using chemical and isotopic techniques. Ecosystem 9:564–577Silva SR, Kendall C, Wilkison DH, Zergler AC, Chang CCY, Avanzino R (2000) A new method for collection of nitrate from fresh water and the analysis of nitrogen and oxygen ratios. J Hydrol 228(1/2):22–36Vitòria L, Soler A, Canals A, Otero N (2008) Environmental isotopes N, S, C, O, D. to determine natural attenuation processes in nitrate contaminated waters: example of Osona (NE Spain). Appl Geochem 23(12):Wang S-J, Li R-L, Sun C-X, Zhang D-F, Li F-Q, Zhou D-Q, Xiong K-N, Zhou Z-F (2004) How types of carbonate rock assemblages constrain the distribution of karst rocky desertified land in Guizhou province, PR China: phenomena and mechanisms. Land Degrad Dev 15:123–131Wang M, Wang S, Yang R (2005) The research on vulnerable karstic environment in Guizhou Province. Geological Publishing House, Beijing (in Chinese)Welhan JA (1987) Stable isotope hydrology. In: Kyser TK (ed) Short course in stable isotope geochemistry of low-temperature fluids. Mineralogical Association of Canada, pp 129–161World Health Organization (WHO) (2008) Guidelines for drinking-water quality (3rd edn). GenevaXue D, Botte J, Baets B, Accoe F, Nestler A, Taylor P, Cleemput O, Berglund M, Boeckx P (2009) Present limitations and future prospects of stable isotope methods for nitrate source identification in surface- and groundwater. Water Res 43(5):Yue F, Liu X, Li J, Zhu Z, Wang Z (2010) Using nitrogen isotopic approach to identity nitrate sources in waters of Tianjin. China. B Environ Contam Tox 85(6):562–567Si-Liang Li1Cong-Qiang Liu1Jun Li1Zicheng Xue1Jin Guan1Yunchao Lang1Hu Ding1Longbo Li11.The State Key Laboratory of Environmental Geochemistry, Institute of GeochemistryChinese Academy of SciencesGuiyangChina当前位置:&&
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