13.060.70 水的生物学特性的检验 标准查询与下载



共找到 744 条与 水的生物学特性的检验 相关的标准,共 50

Water. Methods of sanitary- bacteriological analysis for field conditions

ICS
13.060.70
CCS
发布
2014
实施
2016-01-01

5.1 The enterococci are indicators of the bacteriological quality for potable water, shellfish growing waters, ambient, and recreational waters. A direct relationship between swimming, associated gastroenteritis, and enterococci has been established through epidemiological studies and marine and fresh water bathing beaches. These studies have led to the development of criteria that can be used to establish bathing water standards based on established health-water quality relationships. 5.2 Since small or large volumes of water or dilutions thereof, can be analyzed by the membrane filter technique, a wide range of levels of enterococci in water can be enumerated and detected. 1.1 This test method covers a membrane filter (MF) procedure for the detection and enumeration of the enterococci bacteria in water. The enterococci, which include Entero-coccus faecalis (E. faecalis), E. faecium, and their varieties are commonly found in the feces of humans and other warm-blooded animals. Although some strains are ubiquitous and not related to fecal pollution, enterococci in water are an indication of fecal pollution and the possible presence of enteric pathogens. These bacteria are found in water and wastewater in a wide range of densities. The detection limit is one colony forming unit (CFU)/volume filtered. 1.2 This test method has been used successfully with temperate fresh and marine ambient waters, and wastewaters. It is the user's responsibility to ensure the validity of this test method for waters of untested types. 1.3 The values stated in SI units are to be regarded as the standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 9.

Standard Test Method for Isolation and Enumeration of Enterococci from Water by the Membrane Filter Procedure

ICS
13.060.70
CCS
发布
2014
实施

5.1 This test provides an easy and reliable method for the detection of enterococci in water within 24 h. For recreational water (fresh and marine) testing is performed to insure areas are safe for swimming. Enterolert also can be used for testing bottled water, wastewater, and drinking water. 1.1 This test method covers a simple procedure for the detection of enterococci in water and wastewater. It is based on IDEXX’s patented Defined Substrate Technology (DST).2 This product, Enterolert, utilizes a nutrient indicator that fluoresces when metabolized. It can detect these bacteria at one colony forming unit (CFU)/100 mL within 24 h. The presence of this microorganism in water is an indication of fecal contamination and the possible presence of enteric pathogens. 1.2 This test method can be used successfully with drinking water, source water, recreational (fresh and marine) water, wastewater, and bottled water. It is the user’s responsibility to ensure the validity of this test method for waters of untested matrices. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Enterococci in Water Using Enterolert

ICS
13.060.70
CCS
发布
2014
实施

This International Standard specifies a method for the determination of lethal as well as sublethal effects of contaminated sediments on the ostracod crustacean Heterocypris incongruens after 6 d exposure. The method is applicable not only to fresh water sediments, but also by extension to solid wastes and soils after addition of (uncontaminated) water. The method can also be applied to chemicals or preparations which are spiked into a reference sediment. This International Standard is not applicable to the testing of sediments from the estuarine or marine environment.

Water quality -- Determination of fresh water sediment toxicity to Heterocypris incongruens (Crustacea, Ostracoda)

ICS
13.060.70
CCS
发布
2013-12-31
实施

This International Standard specifies a semi-static method for determination of toxicity of chemicals, waters and wastewaters to embryos and early larval developmental stages of a species of freshwater fish, Danio rerio (Hamilton-Buchanan), Teleostei, Cyprinidae (common name zebrafish). Where necessary this determination may include an acute toxicity test using Danio rerio to determine the 96-h LC50 for zebrafish in accordance with ISO 7346-1, ISO 7346-2 or ISO 7346-3. The method is also applicable to freshwater fish other than zebrafish if appropriate modifications of the test conditions are made, particularly with regard to the temperature and volume per fish biomass.

Water quality -- Determination of toxicity to embryos and larvae of freshwater fish -- Semi-static method

ICS
13.060.70
CCS
发布
2013-12-31
实施

This part of ISO 13641 specifies a screening method for assessing the potential toxicity of substances, mixtures, surface waters, groundwaters and wastewaters, effluents, sludges, or other environmental samples by determining the production of biogas (carbon dioxide and methane) from muds, sediments and other anaerobic environments with low biomass concentration. The growth rate of anaerobic bacteria is much lower, compared with that of aerobic microorganisms. For this reason, the test periods in anaerobic methods are longer than in those with aerobic bacteria. The conditions of this test (for example amount of inoculum and substrate in the test bottles) were adopted to a defined test period over several days. The inoculum can be collected from anaerobic sediments or from large, or laboratory scale, anaerobic digesters. This method is applicable to materials, soluble or insoluble in water, including volatile chemicals (see Reference [1] in the Bibliography). NOTE Special care is necessary with compounds of low water-solubility, and in these cases, see for example, ISO 10634. For general information on biotesting see ISO 5667-16[2]. Information obtained by this method can be helpful prior to anaerobic biodegradability testing with low inoculum mass concentrations and for estimations of the potential effects of chemicals and wastewater to anaerobic processes in habitats characterized by a relatively low anaerobic biomass, for example natural sediments and soils.

Water quality -- Determination of inhibition of gas production of anaerobic bacteria -- Part 2: Test for low biomass concentrations

ICS
13.060.70
CCS
发布
2013-12-31
实施

This International Standard specifies a method for the determination of the lethal effects of toxicants to Thamnocephalus platyurus test organisms after 24 h exposure. A second method (rapid test) is described in Annex A for the determination of sublethal effects after a very short exposure time (1 h). The methods are applicable to: a) chemical substances which are soluble or which can be maintained as stable suspensions or dispersions under the conditions of the test; b) industrial or sewage effluents, treated or untreated, if appropriate after decantation, filtration or centrifugation; c) fresh waters; d) aqueous extracts; e) toxins of blue-green algae. This International Standard is not applicable to the testing of unstable chemicals (hydrolysing, absorbing, etc.) in water unless exposure concentration is measured, nor to the testing of aquatic samples from the estuarine or marine environment.

Water quality -- Determination of the acute toxicity to Thamnocephalus platyurus (Crustacea, Anostraca)

ICS
13.060.70
CCS
发布
2013-12-31
实施

This part of ISO 13641 specifies a screening method for assessing the potential toxicity of substances, mixtures, surface waters, groundwaters and wastewaters, effluents, sludges or other environmental samples by determining the production of biogas (carbon dioxide and methane) from the anaerobic digestion of sewage sludge over periods of up to 3 days. The growth rate of anaerobic bacteria is much lower compared with that of aerobic microorganisms. For this reason, the test periods are longer for anaerobic methods than those used for aerobic bacteria. This method is applicable to substances, soluble or insoluble in water, including volatile chemicals (see Reference [1] in the Bibliography). NOTE Special care is necessary with compounds of low water-solubility, and in these cases, see for example, ISO 10634. For general information on biotesting see ISO 5667-16[2]. This method can provide information that is useful in predicting the likely effect of a test material on biogas production in anaerobic digesters. For example, only longer tests, which simulate working digesters more closely can indicate whether adaptation of the microorganisms to the test material can occur or whether compounds likely to be adsorbed onto sludge can build up to a toxic concentration over a longer period than allowed in this test. Information obtained by this part of ISO 13641 can also be helpful in choosing suitable initial mass concentrations for anaerobic biodegradability tests (e.g. ISO 11734). However, this part of ISO 13641 using undiluted sludge is less suitable for testing dilute digesting sludge than the method described in Part 2 of ISO 13641 where the mass concentrations are a hundredfold more dilute.

Water quality -- Determination of inhibition of gas production of anaerobic bacteria -- Part 1: General test

ICS
13.060.70
CCS
发布
2013-12-31
实施

Water quality. Determination of toxicity of fresh water sediments using $iH$iy$ia$il$ie$il$il$ia $ia$iz$it$ie$ic$ia

ICS
13.060.70
CCS
Z16
发布
2013-12-31
实施
2013-12-31

This International Standard specifies a method for the determination of the genotoxic potential of water and waste water using the bacterial strains Salmonella enterica subsp. enterica serotype Typhimurium TA 98 and TA 100 in a fluctuation assay. This combination of strains is able to measure the genotoxicity of chemicals that induce point mutations (base pair substitutions and frameshift mutations) in genes coding for enzymes that are involved in the biosynthesis of the amino acid, histidine. NOTE 1 ISO 13829[8] applies for the measurement of genotoxicity of samples containing DNA-crosslinking agents. This method is applicable to: — fresh water; — waste water; — aqueous extracts and leachates; — eluates of sediments (fresh water); — pore water; — aqueous solutions of single substances or of chemical mixtures; — drinking water. NOTE 2 When testing drinking water, extraction and pre-concentration of water samples can prove necessary.

Water quality -- Determination of the genotoxicity of water and waste water -- Salmonella/microsome fluctuation test (Ames fluctuation test)

ICS
13.060.70
CCS
发布
2013-12-31
实施

This International Standard gives guidelines for the evaluation of uncertainty in quantitative microbiological analyses based on enumeration of microbial particles by culture. It covers all variants of colony count methods and most probable number estimates. Two approaches, the component (also known as bottom-up or step-by-step) and a modified global (top-down) approach are included. The aim is to specify how values of intralaboratory operational variability and combined uncertainty for final test results can be obtained. The procedures are not applicable to methods other than enumeration methods. NOTE 1 Most annexes are normative. However, only the annexes relevant to each case are to be applied. If the choice is the global approach, then all normative annexes that belong to the component approach can be skipped and vice versa. NOTE 2 Pre-analytical sampling variance at the source is outside the scope of this International Standard, but needs to be addressed in sampling designs and monitoring programmes. NOTE 3 The doubt or uncertainty of decisions based on the use of analytical results whose uncertainty has been estimated is outside the scope of this International Standard. NOTE 4 The extra-analytical variations observed in proficiency tests and intercalibration schemes are also not detailed in this International Standard, but it is necessary to take them into consideration in analytical control. The use of intercalibration data in uncertainty estimation offers the possibility for the bias between laboratories to be included (Nordtest Report TR 537[12]).

Water quality -- The variability of test results and the uncertainty of measurement of microbiological enumeration methods

ICS
13.060.70
CCS
发布
2013-12-31
实施

This International Standard specifies a method for the determination of toxicity to young Hyalella azteca in whole sediment based on survival and growth inhibition after 14 d and/or 28 d. The method is applicable to a)samples of contaminated whole fresh water sediment, b)chemical, industrial, or municipal sludge, or other solid wastes that may combine with fresh wab sediments, and c)chemicals or preparations spiked into clean sediment.

Water quality - Determination of toxicity of fresh water sediments using Hyalella azteca

ICS
13.060.70
CCS
Z16;C53
发布
2013-12-01
实施

本标准规定了用复合酶底物技术方法测定地表水中的菌落总数。 本标准适用于地表水中菌落总数的测定。 本标准的检测下限为2 MPN/mL、未稀释样品的检测上限为738 MPN/mL。

Detection method of composite enzyme substrate for the total number of bacterial colonies in water

ICS
13.060.70
CCS
C 51
发布
2013-08-24
实施
2013-11-24

Water quality. Determination of the toxic effect of sediment on the growth behaviour of Myriophyllum aquaticum

ICS
13.060.70
CCS
Z16
发布
2013-06-30
实施
2013-06-30

Water quality - Biochemical and physiological measurements on fish - Part 3: determination of vitellogenin

ICS
13.060.70
CCS
Z16
发布
2013-06-29
实施
2013-06-29

Water quality - Growth inhibition test with the marine and brackish water macroalgae Ceramium tenuicorne

ICS
13.060.70
CCS
Z16
发布
2013-06-08
实施
2013-06-08

Water quality - Growth inhibition test with the marine and brackish water macroalga Ceramium tenuicorne (ISO 10710:2010); German version EN ISO 10710:2013

ICS
13.060.70
CCS
Z16
发布
2013-06
实施

This International Standard specifies a method for determining the toxicity of environmental samples on the growth of Myriophyllum aquaticum. The method described is applicable to natural fresh water sediment and artificial sediment.

Water quality - Determination of the toxic effect of sediment on the growth behaviour of Myriophyllum aquaticum

ICS
13.060.70
CCS
发布
2013-05-16
实施
2013-05-16

ISO 10710:2010 specifies a method for the determination of the inhibition of growth of the macroalga Ceramium tenuicorne by substances and mixtures contained in seawater or by waste water with salinities between 4S and 32S. This method is applicable to su

Water quality - Growth inhibition test with the marine and brackish water macroalga Ceramium tenuicorne

ICS
13.060.70
CCS
发布
2013-05-08
实施
2013-05-08

This part of ISO 23893 specifies a method for measuring vitellogenin (Vtg) concentrations in a fish plasma sample employing an enzyme-linked immunosorbent assay (ELISA) method.It applies to fish that are sampled in the environment (fresh, estuarine or sal

Water quality - Biochemical and physiological measurements on fish - Part 3: Determination of vitellogenin

ICS
13.060.70
CCS
发布
2013-05-08
实施
2013-05-08



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