DISINFECTION OF HUMAN ENTERIC VIRUSES IN WATER BY COPPER-SILVER AND REDUCED LEVELS OF CHLORINE

被引:9
作者
BOSCH, A
DIEZ, JM
ABAD, FX
机构
关键词
DISINFECTION; CHLORINE; HEPATITIS-A VIRUS; ROTAVIRUS; POLIOVIRUS; ADENOVIRUS; INACTIVATION; WATER;
D O I
10.2166/wst.1993.0374
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Electrolytically generated copper:silver ions were evaluated in combination with low levels of chlorine for their ability to reduce the infectivity of hepatitis A virus, human rotavirus, adenovirus and poliovirus seeded in well and tap water. Overall, hepatitis A virus and rotavirus showed less than 2.6 log10 titre reduction for concentrations of 1 mg/l of free chlorine. For free chlorine concentrations of 0.5 mg/l or lower, with or without copper:silver ions, both of these viral strains suffered little inactivation. Poliovirus showed more than 4 log10 titre reduction in the presence of copper: silver combined with 0.5 mg/l of free chlorine, or 1 mg/l of free chlorine alone. Copper:silver ions (700:70 mug/l) reduced the infectivity of poliovirus. Although adenovirus was more efficiently inactivated than rotavirus or hepatitis A virus, it persisted longer than poliovirus under the same treatments, and its infectivity was never completely removed. The addition of copper:silver ions to reduce the levels of free chlorine do not ensure the total elimination of viral pathogens from water systems.
引用
收藏
页码:351 / 356
页数:6
相关论文
共 14 条
[1]  
[Anonymous], 1984, OFFICIAL METHODS ANA
[2]  
[Anonymous], 1989, STANDARD METHODS EXA
[3]  
Bitton G., 1980, INTRO ENV VIROLOGY
[4]   COMPARATIVE RESISTANCE OF BACTERIOPHAGES ACTIVE AGAINST BACTEROIDES-FRAGILIS TO INACTIVATION BY CHLORINATION OR ULTRAVIOLET-RADIATION [J].
BOSCH, A ;
TARTERA, C ;
GAJARDO, R ;
DIEZ, JM ;
JOFRE, J .
WATER SCIENCE AND TECHNOLOGY, 1989, 21 (03) :221-226
[5]   DETECTION OF HUMAN ROTAVIRUS IN SEWAGE THROUGH 2 CONCENTRATION PROCEDURES [J].
BOSCH, A ;
PINTO, RM ;
BLANCH, AR ;
JOFRE, JT .
WATER RESEARCH, 1988, 22 (03) :343-348
[6]  
CLARKE NA, 1983, DISINFECTION STERILI
[7]   DEVELOPMENT OF A PLAQUE-ASSAY FOR A CYTOPATHIC, RAPIDLY REPLICATING ISOLATE OF HEPATITIS-A VIRUS [J].
CROMEANS, T ;
SOBSEY, MD ;
FIELDS, HA .
JOURNAL OF MEDICAL VIROLOGY, 1987, 22 (01) :45-56
[8]  
HOFF JC, 1986, EAP600286067 REP
[9]   EFFICACY OF COPPER AND SILVER IONS AND REDUCED LEVELS OF FREE CHLORINE IN INACTIVATION OF LEGIONELLA-PNEUMOPHILA [J].
LANDEEN, LK ;
YAHYA, MT ;
GERBA, CP .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1989, 55 (12) :3045-3050
[10]  
Sokal R. R., 1973, INTRO BIOSTATISTICS