ISO 14256-2:2005 PDF
Soil quality — Determination of nitrate, nitrite and ammonium in field-moist soils by extraction with potassium chloride solution — Part 2: Automated method with segmented flow analysis
Soil quality — Determination of nitrate, nitrite and ammonium in field-moist soils by extraction with potassium chloride solution — Part 2: Automated method with segmented flow analysis
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 12
- Дата публикации:
- 12 января 2005 г.
- Издание:
- ISO IS 14256 edition 1 version 1
- ICS:
- 13.080.10
ISO 14256-2:2005 describes an automated method for the determination of nitrate, nitrite and ammonium in a 1 mol/l potassium chloride extract of field-moist soil samples. ISO 14256-2:2005 is applicable to all types of soils homogenized by suitable methods.
Abstract
Overview
ISO 14256-2:2005 specifies an automated method for determining nitrate (NO3‑N), nitrite (NO2‑N) and ammonium (NH4‑N) in field‑moist soils. The method uses a 1 mol/L potassium chloride (KCl) extraction of homogenized soil and analyzes the extract with segmented flow analysis (SFA) using automated spectrophotometric detection. This part of ISO 14256 is applicable to all soil types when appropriately homogenized.
Key topics and technical requirements
- Sampling and handling
- Protect samples from warming during sampling and transport; cool boxes recommended.
- If analyzed within 3 days store at 4 °C; for longer storage freeze at −20 °C and control thawing time.
- Homogenize samples to break aggregates (
Технические детали
- Технический комитет
- ISO/TC 190/SC 3 - Chemical and physical characterization
- SKU
- ISO 14256-2:2005
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