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  2. Soil pH - Wikipedia

    en.wikipedia.org/wiki/Soil_pH

    The buffering of soil pH is often directly related to the quantity of aluminium in soil solution and taking up exchange sites as part of the cation exchange capacity. This aluminium can be measured in a soil test in which it is extracted from the soil with a salt solution, and then is quantified with a laboratory analysis.

  3. Soil test - Wikipedia

    en.wikipedia.org/wiki/Soil_test

    A soil test is a laboratory or in-situ analysis to determine the chemical, physical or biological characteristics of a soil. Possibly the most widely conducted soil tests are those performed to estimate the plant-available concentrations of nutrients in order to provide fertilizer recommendations in agriculture.

  4. Toxicity characteristic leaching procedure - Wikipedia

    en.wikipedia.org/wiki/Toxicity_characteristic...

    Toxicity characteristic leaching procedure (TCLP) is a soil sample extraction method for chemical analysis employed as an analytical method to simulate leaching through a landfill. The testing methodology is used to determine if a waste is characteristically hazardous, i.e., classified as one of the "D" listed wastes by the U.S. Environmental ...

  5. Cation-exchange capacity - Wikipedia

    en.wikipedia.org/wiki/Cation-exchange_capacity

    Cation-exchange capacity (CEC) is a measure of how many cations can be retained on soil particle surfaces. [1] Negative charges on the surfaces of soil particles bind positively-charged atoms or molecules (cations), but allow these to exchange with other positively charged particles in the surrounding soil water. [2]

  6. pH meter - Wikipedia

    en.wikipedia.org/wiki/PH_meter

    A simple pH meter Soil pH meter. In general there are three major categories of pH meters. Benchtop pH meters are often used in laboratories and are used to measure samples which are brought to the pH meter for analysis. Portable, or field pH meters, are handheld pH meters that are used to take the pH of a sample in a field or production site. [19]

  7. OECD Guidelines for the Testing of Chemicals - Wikipedia

    en.wikipedia.org/wiki/OECD_Guidelines_for_the...

    Fish, Short-term Toxicity Test on Embryo and Sac-Fry Stages 213: Honeybees, Acute Oral Toxicity Test 214: Honeybees, Acute Contact Toxicity Test 215: Fish, Juvenile Growth Test 216: Soil Microorganisms: Nitrogen Transformation Test 217: Soil Microorganisms: Carbon Transformation Test 218: Sediment-Water Chironomid Toxicity Using Spiked Sediment 219

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