ISO/TS 14256-1:2003 PDF
Soil quality — Determination of nitrate, nitrite and ammonium in field-moist soils by extraction with potassium chloride solution — Part 1: Manual method
Soil quality — Determination of nitrate, nitrite and ammonium in field-moist soils by extraction with potassium chloride solution — Part 1: Manual method
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 14
- Дата публикации:
- 1 апреля 2003 г.
- Издание:
- ISO TS 14256 edition 1 version 1
- ICS:
- 13.080.10
ISO/TS 14256-1:2003 describes a method for the determination of nitrate, nitrite and ammonium in a 1 mol/l potassium chloride extract of field-moist soil samples. ISO/TS 14256-1:2003 is applicable to all types of soils homogenized by suitable methods.
Abstract
Overview
ISO/TS 14256-1:2003 specifies a manual method for determining inorganic nitrogen forms - nitrate (NO3−), nitrite (NO2−) and ammonium (NH4+) - in field‑moist soils. The method uses a 1 mol/l potassium chloride (KCl) extraction of homogenized soil and quantitative spectrophotometric determination of the nitrogen species. It is applicable to all soil types when samples are homogenized by suitable methods.
Key topics and technical requirements
- Sample handling and storage
- Protect samples from warming during sampling and transport (use cool boxes in warm weather).
- Analyse fresh samples within 3 days at 4 °C; otherwise store at −20 °C. Controlled thawing is required if frozen.
- Homogenize laboratory sample to particles
Технические детали
- Технический комитет
- ISO/TC 190/SC 3 - Chemical and physical characterization
- SKU
- ISO/TS 14256-1:2003
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