B11 土壤、水土保持 标准查询与下载
共找到 800 条与 土壤、水土保持 相关的标准，共 54 页
This part of ISO 12782 specifies a procedure to determine the concentration of humic substances in soil or other materials. Other materials also include waste. The content of humic substances can be used as input in geochemical models.
Soil quality - Parameters for geochemical modelling of leaching and speciation of constituents in soils and materials - Part 4: Extraction of humic substances from solid samples
- ICS
- 13.080.05;13.080.10
- CCS
- B11
- 发布
- 2012-06
- 实施
This part of ISO 12782 specifies a procedure to determine the concentration of humic substances in aqueous samples. These samples may be obtained as such or as eluates from leaching procedures applied to soil or other materials. Other materials also include waste. The content of humic substances can be used as input in geochemical models.
Soil quality - Parameters for geochemical modelling of leaching and speciation of constituents in soils and materials - Part 5: Extraction of humic substances from aqueous samples
- ICS
- 13.080.05;13.080.10
- CCS
- B11
- 发布
- 2012-06
- 实施
This part of ISO 12782 specifies the determination of the content of “reactive” iron in the form of amorphous iron oxides and hydroxides in soil and other materials by extraction with ascorbic acid. Other materials also include waste. The content of “reactive” iron can be used as input in geochemical models to represent the content of amorphous iron (hydr)oxides. NOTE Although the ammonium oxalate/oxalic acid extraction (ISO 12782-3) is commonly used to estimate “reactive” iron in the form of iron oxides and hydroxides, this part of ISO 12782, in conjunction with ISO 12782-2, has been shown to be more specific for the extraction of amorphous and crystalline iron (hydr)oxides, respectively.
Soil quality - Parameters for geochemical modelling of leaching and speciation of constituents in soils and materials - Part 1: Extraction of amorphous iron oxides and hydroxides with ascorbic acid
- ICS
- 13.080.05;13.080.10
- CCS
- B11
- 发布
- 2012-06
- 实施
Soil quality - Determination of soil water content as a volume fraction on the basis of known dry bulk density - Gravimetric method (ISO 16586:2003 + Cor. 1:2009)
- ICS
- 13.080.40
- CCS
- B11
- 发布
- 2012-05-01
- 实施
Soil quality - Determination of the water retention characteristics - Laboratory methods (ISO 11274:1998 + Cor. 1:2009)
- ICS
- 13.080.40
- CCS
- B11
- 发布
- 2012-04-01
- 实施
Soil quality. Guidance on the selection and application of screening methods
- ICS
- 13.080.10
- CCS
- B11
- 发布
- 2012-03-31
- 实施
- 2012-03-31
Soil quality - Microwave-assisted extraction of the aqua regia soluble fraction for the determination of elements.
- ICS
- 13.080.10
- CCS
- B11
- 发布
- 2012-03-01
- 实施
- 2012-03-15
This International Standard specifies a method for microwave-assisted extraction of elements from samples using aqua regia as the extraction solution for the determination of elements. This method is applicable to all types of soil and soil material. Aqua regia extraction is suitable for the release of trace and major element fractions in soil. Aqua regia is not suitable for the extraction of elements from refractory compounds, such as SiO2, TiO2 and Al2O3. The extraction with aqua regia is operationally defined and will not necessarily release all elements completely. The microwave method is generic and can be implemented using a wide variety of equipment, provided: a) the extraction mixture ratio is unchanged; b) the extraction temperature is known. Solutions produced by the microwave method are suitable for analysis, for example, by using atomic absorption spectrometry (flame: FAAS, hydride generation: HGAAS, cold vapour: CVAAS, graphite furnace; GFAAS), inductively coupled plasma emission spectrometry (ICP/OES) and inductively coupled plasma mass spectrometry (ICP/MS). NOTE Due to the presence of chloride in the extraction solution, limitations for the application of analytical techniques can occur.
Soil quality - Microwave-assisted extraction of the aqua regia soluble fraction for the determination of elements
- ICS
- 13.080.10
- CCS
- B11
- 发布
- 2012-02
- 实施
This International Standard specifies a method for direct extraction of DNA from soil samples to analyse the global structure and the abundance of soil bacterial communities using PCR-based technologies. This method is mainly dedicated to agricultural and forest soils. This method can possibly not be suitable for soils rich in organic matter (e.g. peat soils) or soils heavily polluted with organic pollutants or heavy metals. The direct extraction of DNA from soil samples provides unique insight into the richness and structure of microbial communities which are key parameters to estimate the biodiversity of soil microbiota. Molecular approaches based on PCR (polymerase chain reaction) amplification of soil DNA constitute a promising domain and can contribute in the near future to the development of routine tools to monitor the microbiota of soil environments. Users of the method ought to be aware that although soil submitted to the DNA extraction procedure is sieved thoroughly (2 mm mesh, procedure described in 5.1), plant residues can still remain in soil samples and, as a result, traces of plant DNA can contaminate the soil DNA extract.
Soil quality - Method to directly extract DNA from soil samples
- ICS
- 13.080.30
- CCS
- B11
- 发布
- 2012-02
- 实施
This part of ISO 11269 describes a method to assess the quality of an unknown soil and the soil habitat function by determining the emergence and early growth response of at least two terrestrial plant species compared to reference or standard control soils. It is applicable to soils of unknown quality, e.g. from contaminated sites, amended soils or soils after remediation.
Soil quality - Determination of the effects of pollutants on soil flora - Part 2: Effects of contaminated soil on the emergence and early growth of higher plants
- ICS
- 13.080.30
- CCS
- B11
- 发布
- 2012-01
- 实施
Tests performed using this test method provide a detailed record of cone resistance which is useful for evaluation of site stratigraphy, homogeneity and depth to firm layers, voids or cavities, and other discontinuities. The use of a friction sleeve and porewater pressure element can provide an estimate of soil classification, and correlations with engineering properties of soils. When properly performed at suitable sites, the test provides a rapid means for determining subsurface conditions. This test method provides data used for estimating engineering properties of soil intended to help with the design and construction of earthworks, the foundations for structures, and the behavior of soils under static and dynamic loads. This method tests the soil in-situ and soil samples are not obtained. The interpretation of the results from this test method provides estimates of the types of soil penetrated. Engineers may obtain soil samples from parallel borings for correlation purposes but prior information or experience may preclude the need for borings. Note 38212;The quality of the results produced by this standard is dependent on the competence of the personal performing the test, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors and Practice D3740 provides a means of evaluating some of those factors.1.1 This test method covers the procedure for determining the point resistance during penetration of a conical-shaped penetrometer as it is advanced into subsurface soils at a steady rate. 1.2 This test method is also used to determine the frictional resistance of a cylindrical sleeve located behind the conical point as it is advanced through subsurface soils at a steady rate. 1.3 This test method applies to friction-cone penetrometers of the electric and electronic type. Field tests using mechanical-type penetrometers are covered elsewhere by Test Method D3441. 1.4 This test method can be used to determine porewater pressures developed during the penetration, thus termed piezocone. Porewater pressure dissipation, after a push, can also be monitored for correlation to time rate of consolidation and permeability. 1.5 Additional sensors, such as inclinometer, seismic geophones (Test Methods D7400), resistivity, electrical conductivity, dielectric, and temperature sensors, may be included in the penetrometer to provide useful information. The use of an inclinometer is highly recommended since it will provide information on potentially damaging situations during the sounding process. 1.6 Cone penetration test data can be used to interpret subsurface stratigraphy, and through use of site specific correlations, they can provide data on engineering properties of soils intended for use in design and construction of earthworks and foundations for structures. 1.7 The values stated in SI units are to be regarded as standard. Within Section 13 on Calculations, SI units are considered the standard. Other commonly used units such as the inch-pound system are shown in br......
Standard Test Method for Electronic Friction Cone and Piezocone Penetration Testing of Soils
- ICS
- 13.080.20
- CCS
- B11
- 发布
- 2012
- 实施
Construction specification for farmland low-pressure pipeline water delivery irrigation project
- ICS
- 65.020.01
- CCS
- B11
- 发布
- 2011-12-31
- 实施
- 2012-02-28
Soil quality. Sampling of soil invertebrates. Sampling and extraction of soil macro-invertebrates
- ICS
- 13.080.30
- CCS
- B11
- 发布
- 2011-12-31
- 实施
- 2011-12-31
Construction norms for agricultural comprehensive development land treatment projects
- ICS
- 65.020.01
- CCS
- B11
- 发布
- 2011-12-31
- 实施
- 2012-02-28
High-standard farmland construction specifications for comprehensive agricultural development
- ICS
- 65.020.01
- CCS
- B11
- 发布
- 2011-12-31
- 实施
- 2012-02-28
Acceptance procedures for agricultural comprehensive development land treatment projects
- ICS
- 65.020.01
- CCS
- B11
- 发布
- 2011-12-31
- 实施
- 2012-02-28
Soil quality. Sampling of soil invertebrates. Sampling and extraction of soil macro-invertebrates
- ICS
- 13.080.05;13.080.30
- CCS
- B11
- 发布
- 2011-12-31
- 实施
- 2011-12-31
Technical Regulations for Transformation of Medium and Low Yield Fields
- ICS
- 65.020.01
- CCS
- B11
- 发布
- 2011-12-28
- 实施
- 2012-03-01
