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  • T/QDAS 009-2018 - 中外标准 - - 2018/12 - 现行
  • NF EN 689-1995 - 中外标准 - - - 现行
  • 服务由 质检出版社 提供

    NY 5110-2002 - 中外标准 - - - 作废
    本标准规定了无公害西瓜产地选择要求、环境空气质量要求、灌溉水质量要求、土壤环境质量要求、试验方法及采样方法。本标准适用于无公害西瓜产地。
    无公害食品西瓜产地环境条件
  • DIN ISO 13964-1999 - 中外标准 - - - 现行
    臭氧大气臭氧浓度测量仪器测定化学分析和试验干扰环境空气光度测量法(化学分析)基准方法空气质量紫外线辐射Air qualityAmbient airAtmosphereChemical analysis and testingDeterminationInterferencesMeasuring instrumentsOzoneOzone concentrationPhotometry (chemical analysis)Reference methodsUltraviolet radiation
  • NF EN 1540-1999 - 中外标准 - - - 现行
  • GB 3095-1982 - 中外标准 - - - 作废
    污染控制质量检查自然工作条件空气污染环境卫生危害
  • ISO 11263-1994 - 中外标准 - - - 现行
    Specifies an extraction method and analytical conditions to determine the content of soil phosphorus soluble in sodium hydrogen carbonate solution. Lays down colour development at room temperature and after heating to a high temperature. Applicable to all types of soils.
    土壤组分土壤试验磷含量含量测定光谱测定法可溶的碳酸氢钠Composition of the groundDetermination of contentPhosphorusPhosphorus contentSodium bicarbonateSoil testingSolubleSpectrometry
  • 服务由 质检出版社 提供

    GB 22573-2008 - 中外标准 - - 2008/12 - 现行
    本标准规定了灌溉水中氯苯、1,2-二氯苯、1,4-二氯苯、硝基苯限量。   本标准适应于以地面水、地下水和处理后的城市污水作水源的农田灌溉用水,不适用于医药、生物制品、化学试剂、农药、石油炼制、焦化和有机化工等处理后的工业废水作水源的农田灌溉用水。
    保水与水流工程灌溉工程氯苯硝基化合物极限(数学)WATERWATER RETENTION AND FLOW WORKSIRRIGATION WORKSCHLOROBENZENECHLOROBENZENESBENZENEBENZENESNITRO COMPOUNDSLIMITS (MATHEMATICS)
  • ASTM D5521-2005 - 中外标准 - - - 现行

    A properly designed, installed, and developed ground-water monitoring well, constructed in accordance with Practice D 5092 should provide the following: representative samples of ground water that can be analyzed to determine physical properties and water-quality parameters of the sample or potentiometric levels that are representative of the total hydraulic head of that portion of the aquifer screened by the well, or both. Such a well may also be utilized for conducting aquifer tests used for the purpose of determining the hydraulic properties of the geologic materials in which the well has been completed.

    Well development is an important component of monitoring well completion. Monitoring wells installed in aquifers should be sufficiently developed to ensure that they serve their intended objectives. Well development methods vary with the physical characteristics of the geologic formation in which the monitoring well is screened, the construction details of the well, the drilling method used during the construction of the borehole in which the well is installed, and the quality of the water. The development method for each individual monitoring well should be selected from among the several methods described in this guide and should be employed by the well construction contractor or the person responsible for monitoring well completion.

    The importance of well development in monitoring wells cannot be overestimated; all too often development is not performed or is carried out inadequately. Proper and careful well development will improve the ability of most monitoring wells to provide representative, unbiased chemical and hydraulic data. The additional time and money spent performing this important step in monitoring well completion will minimize the potential for damaging pumping equipment and in-situ sensors, and increase the probability that ground-water samples are representative of water contained in the monitored formation.

    1.1 This guide covers the development of screened wells installed for the purpose of obtaining representative ground-water information and water quality samples from granular aquifers, though the methods described herein could also be applied to wells used for other purposes. Other well-development methods that are used exclusively in open-borehole bedrock wells are not described in this guide.

    1.2 The applications and limitations of the methods described in this guide are based on the assumption that the primary objective of the monitoring wells to which the methods are applied is to obtain representative water quality samples from aquifers. Screened monitoring wells developed using the methods described in this guide should yield relatively sediment-free samples from granular aquifer materials, ranging from gravels to silty sands. While many monitoring wells are considered "small-diameter" wells (that is, less than four inches in inside diameter), some of the techniques described in this guide will be more easily applied to large-diameter wells (that is, four-inches or greater in inside diameter).

    1.3 The values stated in inch-pound units are to be regarded as standard. All other units in parentheses are provided for information only.

    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.

    1.4 This guide offers an organized collection of information or a series of options and does not recommend a specific course of action. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this guide may be applicable in all circumstances. This ASTM standard is not intended to represent or replac......

    含水土层粒状地下水监控自然资源水质水井水域aquifergroundwaterhigh-velocityhydraulic jettingjettingmechanical surgingmonitoring wellover-pumping and backwashingrepresentative samplewell development:Granular aquifersGround waterMaintenance (of ground-water wells)Wells
  • DIN EN ISO 11732-2005 - 中外标准 - - - 现行
    According to the methods specified in this document ammonia may be determined in large sample series and the high analysis frequency. The method includes an automatic dosage.
    分析方法试验额定值数学计算化学分析和试验试验结果水流分析铵态氮污泥检验地表水含量测定饮用水水常规(实验)水质试验解释抽样方法地下水分析测定试验设备试样制备生活污水校正水域铵化合物示踪法废水检验流量测量技术水组分光度测量法(化学分析)氮含量研究方法药液套管水质光谱测定法Ammoniacal nitrogenAmmoniumAmmonium compoundsAnalysisBushingsCalibrationChemical analysis and testingChemicalsDeterminationDetermination of contentDomestic sewageExamination of sludgeExamination of waste waterFlow analysisFlow measuring techniquesGround waterInterpretationsMathematical calculationsMethods of analysisNitrogenNitrogen contentPhotometry (chemical analysis)Potable waterRatingsResearch methodsSampling methodsSpecimen preparationSpectrometrySurface waterTest equipmentTest resultsTestingTracer methodsWaterWater constituentsWater practiceWater qualityWater testingWaters
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