
[分化] 原子吸收分光光度法
The contents of elements K, Na, Ca, Mg in carbon fibre were determined by atomic absorption spectrophotometry.
碳纖維中的鉀、鈉、鈣、鎂元素的含量可用原子吸收分光光度法來測定。
This paper reports the development of the determination of trace metal Fe in doxycycline hydrochloric acid by flame atomic absorption spectrophotometry.
本文研究了鹽酸脫氧土黴素中微量金屬元素鐵的火焰原子吸收分光光度法的測定。
Seminal plasma zinc(Zn), copper(Cu), iron(Fe), manganese(Mn) and nickel(Ni) in 17 infertile and 21 fertile men were measured by atomic absorption spectrophotometry.
采用原子吸收分光光度法,測定17例不育及21例已育男子精漿鋅、銅、鐵、錳和鎳含量。
Methods The contents of dissolvable zinc salt in deodorants extracted by pure water were detected by flame atomic absorption spectrophotometry.
方法用純水提取除臭劑等化妝品中可溶性鋅鹽,再用火焰原子吸收分光光度法測定其含量。
Methods The atomic absorption spectrophotometry(AAS) was used to determine the content of Pb, Cr, As, Hg and Cu in decoction and artificial gastric juice of Fluorite.
方法采用原子吸收分光光度法對紫石英在水煎液和人工胃液中鉛、镉、砷、汞、銅的含量分别進行測定。
The content of trace elements in horseshoe crab plasma was determined by atomic absorption spectrophotometry.
采用原子吸收分光光度法測定了鲎血中的微量元素含量。
To determine trace copper and lead and cadmium in water by using the method of Graphite Furnace Atomic Absorption spectrophotometry in the paper.
用石墨爐原子吸收分光光度法對水中痕量銅、鉛、镉樣品進行測定。
The content of magnesium in 10 kinds of Chinese traditional medicine for curing cerebrovascular disease was determined by atomic absorption spectrophotometry.
采用原子吸收分光光度法測定了10種腦血管藥物中鎂的含量。
Method: The wet digestion and flame atomic absorption spectrophotometry were employed.
方法:采用濕法消化,火焰原子吸收分光光度法測定。
Arsenic is separated from the bismuth matrix by ion exchange method and determined by hydride generation atomic absorption spectrophotometry.
該方法用離子交換将砷同基體铋分離,然後用氫化物發生原子吸收光譜法測定。
Atomic absorption spectrophotometry was used to determine the serum zinc concentration in rabbits.
用原子吸收分光光度法測定兔血清鋅濃度。
The contents of Cu, Zn and Fe in different muscle tissues of pigs and chickens were determined by flame atomic absorption spectrophotometry(FAAS).
本實驗利用火焰原子吸收法對豬和雞不同部位肌組織中銅、鋅和鐵含量進行了測定。
The paper introduces a direct measurement on trace metal elements of strontium and barium in organic liquid phase by atomic absorption spectrophotometry.
本文主要介紹有機相溶液痕量金屬無素锶、鋇的原子吸收光譜直接測定法。
The method for the determination of trace mercury in water samples by hydride generation atomic absorption spectrophotometry after cloud point extraction was proposed.
提出了濁點萃取預富集氫化物發生-原子吸收光譜法測定痕量汞的新方法。
Objective To establish a method for indirect determination of the sulfate in drinking water by atomic absorption spectrophotometry.
目的探讨原子吸收間接法測定飲用水中硫酸鹽的方法。
In atomic absorption spectrophotometry, the calibration curve is always required.
原子吸收光譜法進行樣品測定時,必須制作校準曲線。
Method:The hair content of Zn, Fe and Cu in 170 children of RRTI and 150 normal children was determined by atomic absorption spectrophotometry.
方法:應用原子吸收分光光度法測定了兒童反複呼吸道感染(RRTI)組和對照組頭發鋅、鐵、銅的含量。
The content of Pb in 10 kinds of Chinese traditional medicine for curing cerebrovascular was determined by atomic absorption spectrophotometry.
采用原子吸收分光光度法測定了十種治療腦血管疾病的中成藥中鉛含量。
Contents of MMC and magnetic fluid in the magnetic pro-drug were measured by gel filtration chromatography and atomic absorption spectrophotometry, respectively.
産物經葡聚糖凝膠柱分離紫外分光光度法和原子吸收分光光度法分别測定其絲裂黴素含量和磁流體含量。
Methods:To determinate the total sodium in hemofiltration replacement fluid by atomic absorption spectrophotometry and appraise the uncertainty according to JJF1059-1999.
方法:用原子吸收分光光度法測定血液濾過置換液中總鈉含量,并根據《測量不确定度評定與表示》(JJF1059-1999)中有關規定評估其不确定度。
Method: Atomic absorption spectrophotometry was used to determine the content of trace elements in hair.
方法:采用火焰原子吸收分光光度法測定發中微量元素含量。
A determination of total chromium in environmental samples by flame atomic absorption spectrophotometry was stu***d.
研究環境樣品中總鉻用火焰原子吸收分光光度法測定。
In this paper, the atomic absorption spectrophotometry method was put forward to determine the Palladium content instead of spectrophotometry by experiment improvement.
提出以原子吸收法取代分光光度法測定碳钯催化劑中钯含量。
Determination of gold in industrial waste by activated carbon concentration and atomic absorption spectrophotometry;
目的建立用原子吸收分光光度法測定血紅素口服液中鐵的含量的方法。
原子吸收分光光度法(Atomic Absorption Spectrophotometry,AAS)是一種基于氣态基态原子對特征電磁輻射吸收作用的定量分析技術。該方法利用特定元素原子在高溫下吸收特定波長光的特性,通過測量光強度衰減程度來推算樣品中元素的濃度,具有ppb級(十億分之一)的檢測靈敏度。
其工作原理遵循朗伯-比爾定律(Lambert-Beer Law): $$ I = I0 e^{-k u N l} $$ 式中$I0$為入射光強度,$I$為透射光強度,$k u$為吸收系數,$N$為原子濃度,$l$為吸收層厚度。通過标準曲線法即可定量未知樣品濃度。
該技術廣泛應用于環境監測(如水質重金屬檢測)、食品安全(食品中微量元素分析)和臨床醫學(血鉛含量測定)等領域。根據美國材料與試驗協會ASTM E177标準,現代原子吸收光譜儀配備空心陰極燈作為光源,采用火焰原子化或石墨爐原子化系統,可檢測70多種金屬元素。
相較于其他光譜分析方法,AAS具有選擇性好、抗幹擾能力強的優勢。國際純粹與應用化學聯合會(IUPAC)在《分析化學術語綱要》中明确指出,該方法通過電子躍遷原理實現元素特異性檢測,是痕量金屬分析的金标準之一。
atomic absorption spectrophotometry(原子吸收分光光度法)是一種用于測定樣品中金屬元素含量的儀器分析方法。以下是詳細解釋:
當光源發射的待測元素特征譜線通過原子化器中的基态原子蒸氣時,基态原子會選擇性吸收特定波長的光,吸收強度與元素濃度成正比(朗伯-比爾定律)。公式表示為: $$ A = -lg frac{I}{I_0} = KCL $$ 其中,( A )為吸光度,( K )為常數,( C )為濃度,( L )為光程。
主要用于環境監測、食品安全、醫藥、冶金等領域中的金屬元素定量分析。
如需更完整信息,可參考原子吸收光譜法相關教材或儀器說明書。
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