NY/T 1100-2006
AbolishedDetermination of Lead and Cadmium in Rice - Graphite Furnace Atomic Absorption Spectrometry
稻米中铅 镉的测定 石墨炉原子吸收光谱法
Catalogue
前言 → 1 范围 → 2 原理 → 3 试剂 Foreword → 1 Scope → 2 Principle → 3 Reagents
Scope
This standard specifies the method for the determination of lead and cadmium in rice using graphite furnace atomic absorption spectrometry. This standard is applicable to the determination of lead and cadmium in rice. The detection limits and quantitative determination ranges of this standard: lead is 0.025 mg/kg, cadmium is 0.0025 mg/kg; the quantitative determination ranges are lead from 0.08 mg/kg to 1.0 mg/kg, cadmium from 0.008 mg/kg to 0.1 mg/kg.
本标准规定了用石墨炉原子吸收光谱法测定稻米中铅 .镉的方法。本标准适用于稻米中铅 镉的测定。本标准检出限和定量测定范围:铅为 0.025 mg/kg, 镉为 0.002 5 mg/kg; 定量测定范围铅为0.08 mgAg~1.0 mgAg,镉为0.008 mgAg~0.1 mgAg。
Keywords
Application Summary AI generated
Agricultural quality inspection agencies and food testing laboratories use this standard to determine lead and cadmium levels in rice. It provides a reliable analytical method for monitoring heavy metal contamination in rice, helping to ensure food safety. The standard is important because it enables accurate quantification of trace lead and cadmium, ensuring rice meets safety limits.
农业质检机构和食品检测实验室使用该标准来检测稻米中的铅和镉含量。该标准为稻米重金属污染监测提供了可靠的分析方法，有助于保障粮食安全。其重要性在于能够准确测定微量铅镉，确保稻米符合食品安全限量要求。
AI Summary AI generated
This standard specifies a graphite furnace atomic absorption spectrometric method for determining lead and cadmium in rice. After acid digestion, the sample is atomized in a graphite furnace, and quantification is performed by measuring absorbance at specific resonance wavelengths. The detection limits are 0.025 mg/kg for lead and 0.0025 mg/kg for cadmium. It is applicable for detecting lead and cadmium in rice, providing technical support for food safety monitoring.
本标准规定了稻米中铅和镉的石墨炉原子吸收光谱测定方法。试样经酸消解后，在石墨炉中原子化，通过测量铅和镉对特定波长共振线的吸光度进行定量。标准给出了检出限和定量范围，铅为0.025 mg/kg，镉为0.0025 mg/kg。适用于稻米中铅镉含量的检测，为粮食安全监测提供技术依据。
Key Sentences extracted from text
本标准规定了用石墨炉原子吸收光谱法测定稻米中铅 .镉的方法。
本标准适用于稻米中铅 镉的测定。
本标准检出限和定量测定范围:铅为 0.025 mg/kg, 镉为 0.002 5 mg/kg; 定量测定范围铅为0.08 mgAg~1.0 mgAg,镉为0.008 mgAg~0.1 mgAg。
试样经酸消解后 ,注入石墨炉中原子化,铅 镉分别对空心阴极灯发射的 283.3 nm 和 228.8 nm 共振线产生选择性吸收 ,在一定浓度范围内 ,其吸光度与铅 .镉含量成正比,与标准系列比较定量。
除非另有说明 ,在分析中仅使用确认为优级纯的试剂和去离子水或相当纯度的水。
This standard specifies the method for the determination of lead and cadmium in rice using graphite furnace atomic absorption spectrometry.
This standard is applicable to the determination of lead and cadmium in rice.
The detection limits and quantitative determination ranges of this standard: lead is 0.025 mg/kg, cadmium is 0.0025 mg/kg; the quantitative determination ranges are lead from 0.08 mg/kg to 1.0 mg/kg, cadmium from 0.008 mg/kg to 0.1 mg/kg.
After acid digestion, the sample is injected into the graphite furnace for atomization; lead and cadmium produce selective absorption of the resonance lines at 283.3 nm and 228.8 nm emitted by hollow cathode lamps respectively, and within a certain concentration range, the absorbance is proportional to the lead and cadmium content, and quantification is performed by comparison with a standard series.
Unless otherwise specified, only reagents confirmed to be of guaranteed reagent grade and deionized water or water of equivalent purity shall be used in the analysis.