火焰原子吸收法测定人胸水中铜,锌,铁含量的研究

本文用火焰原子吸收光谱法研究测定了人（肺结核、肺癌）胸水中铜、锌、铁。测定肺结核胸水２１例，该胸水中铜、锌、铁含量平均值分别为０．７１±０．０８ｍｇ／Ｌ，４．７８±０．１８ｍｇ／Ｌ，３．２２±０．１５ｍｇ／Ｌ。肺癌胸水２１例，其胸水铜、锌、铁含量为０．９８±０．０９ｍｇ／Ｌ，３．８０±０．１６ｍｇ／Ｌ，５．３５±０．２１ｍｇ／Ｌ。该方法的回收率为９５．２１％－１０５．５４％。相对标准偏差小于４．８４％。     

荧光分光光度法测定黄芪口服液中黄芪甲甙的研究

利用在硫酸条件下香草醛与黄芪甲甙的荧光反应测定黄芪口服液中的黄芪甲甙，黄芪甲甙与香草醛反应产物的最大激发波长为λｅｘ＝３６８ｎｍ，最大发射波长λｅｍ４３５ｎｍ。黄芪甲甙在０．０－３０．０ｍｇ／Ｌ范围呈良好的线性关系，最低检出限为０．３μｇ／ｍＬ，测定样品的回收率为９６．７２％－１０３．３０％。     

二氢奎尼丁的荧光分析法研究

本文探讨了用荧光光度法检测二氢奎尼丁的方法及实验条件，在０．０５ｍｏｌ／Ｌ Ｈ２ＳＯ４、１％ＨＡＣ介质中最大激发波长２５０ｎｍ、３６０ｎｍ，最大发射波长４４４ｎｍ，量子产率为０．５５（在０．０５ｍｏｌ／Ｌ Ｈ２ＳＯ４介质中）、０．５４（在１％ＨＡＣ介质中）。线性范围０．０５ｎｇ／ｍｌ￣５．０μｇ／ｍｌ。检出限量为０．０１ｎｇ／ｍｌ。本方法简便、快速、灵敏度高，适用于临床医学监测服药病人血浆及尿液中     

FAAS法测定对氨基乙酰苯胺中的铁

本文建立了火焰原子吸收光谱法测量对氨基乙酰苯胺中的铁的方法。样品用酸分解或灰化处理后进行酸溶。采用氧化性空气／乙炔火焰，于２４８．３ｎｍ波长进行测定，２４种金属离子不干扰铁的测定，其特征浓度为０．０７５μｇ／ｍＬ１％吸收，ＤＬ（３Ｓ）为０．０１４μｇ／ｍＬ，ＲＳＤ（ｎ＝１１）为０．７２％，标准回收率为９８％—１０３％。本方法与ＩＣＰ－ＡＥＳ法及分光光度法测量结果一致。     

火焰原子吸收光谱法测定红细胞膜结合铜,锌,铁

本文用火焰原子吸收光谱测定红细胞结合铜，锌，铁含量。测定健康者３４人，膜结合铜，锌，铁平均值分别为０．２３９±μ／ｍｇ膜蛋白；肺癌患者３０人，膜结合铜，锌，铁平均值分别为０．２８２±０．５１５μｇ／ｍｇ膜蛋白，１．５１４±０．４７６μｇ／ｍｇ膜蛋白，１７．５３±３．７７μｇ／ｍｇ膜蛋白。测定结果表明，肺癌组膜结合锌明显低旦对照组（Ｐ＜０．０１）；膜结合铁明显高于对照组（Ｐ＞０．０５）；膜结合铜与对     

平台石墨炉原子吸收法测定茶叶中的微量镉

本文提出了平台石墨炉原子吸收法测定镉的方法，以０．２ｍｇ／ｍＬ，ＰｄＣｌ２＋０．２ｍｇ／ｍＬＭｇ（ＮＯ３）２的混合液作基体改进剂，能有效的消除生物样品的基体效应，方法简单，精密度好，利用标准曲线即可测定茶叶样品中镉。     

FAAS法测定对氯基乙酰苯胺中的铁

本文建立了火焰原子吸收光谱法测定对氨基乙酰苯胺中的铁的方法。样品用酸分解或灰化处理后进行酸溶。采用氧化性空气／乙炔火焰，于２４８．３ｎｍ波长进行测定，２４种金属离子不干扰铁的测定，其特征浓度为０．０７５μｇ／ｍＬ／１％吸收，ＤＬ（３Ｓ）为０．０１４μｇ／ｍＬ，ＲＳＤ（ｎ＝１１）为０．７２％，标准回收率为９８％－１０３％。本方法与ＩＣＰ－ＡＥＳ法及分光光度法测定结果一致。     

双波长分光光度法测定铜及其络合物特征参数

在ｐＨ４．５醋酸盐缓冲溶液中，铜（Ⅱ）与氯磺酚Ｓ（ＳＣＰＳ）发生灵敏显色反应，生成蓝色络合物。本文应用β修正光度分析原理，研究此显色反应双波长测定废水中微量铜，分析灵敏度和准确度均比普通光度法有所提高，而且，络合物的络合比，实际摩尔吸光系数和不稳定常数均能够准确而简单地测得。结果表明，在铜浓度为０－０．８０ｍｇ／Ｌ范围内，符合朗白－比尔定律，铜最低测定浓度为０．０３ｍｇ／Ｌ。对样品分析，铜的加标回收率为９３．５％—１０９％，相对标准偏差ＲＳＤ≤３．７％。     

连续氢化法电感耦合等离子体发射光谱同时测定生物样品…

本文叙述用氢化法电感耦合等离子体发射光谱同时测定生物样品中痕量硒，砷，锡，锑的方法。比较了浓度为２．８８ｍｏｌ／Ｌ，４．８ｍｏｌ／Ｌ和６．０ｍｏｌ／Ｌ的ＨＣｌ对Ｓｅ，Ａｓ，Ｓｎ，Ｓｂ，Ｈｇ和Ｇｅ谱线强度的影响，也比较了ＮａＢＨ４溶液中ＶＣ对测定Ｓｅ，Ａｓ，Ｓｂ，Ｓｎ，Ｈｇ和Ｇｅ的影响。在４．８ｍｏｌ／Ｌ ＨＣｌ浓度下，在１％ＮａＢＨ４溶液中加０．５％ＶＣ，ＨＹ－ＩＣＰ－ＡＥＳ的检出限是：Ｓｅ ０．     

主次波长—甲酚催化光度法测定天然水碘化物

碘（Ⅰ）能催化氯胺Ｔ－甲酚红（ｐＨ５．０）反应，硫化硫酸钠抑制反应后加入硫酸使碘反应液呈黄色。该催化反应包括红色褪色和黄色显色两重定量，主次波长光度法利用两色最强吸收波长将定量联合，从而使Ｉ＾－分析灵敏度显著高于单纯褪色或显色反应灵敏度。方法简单、快速、Ｉ＾－曲线稳定，精密度和准确度良好。适合于≥０．００２ｍｇ／Ｌ清洁天然水分析。     

Determination of Chloride by Flame molecular Absorption Spectrometry with Continuum Source and Self-Reversal Background Correction

The use of continuum source and self-reversal background correction were investigated for flame molecular absorption spectrometry (MAS). Chloride was determined by MAS using the aluminum monochloride molecule in a conventional flame atomic absorption spectrometer. Absorbance of this molecule was monitored in a lean nitrous oxide/acetylene flame at 261.4 nm using a lead hollow cathode lamp as the excitation source. Characteristic masses of 210, 260, and 820 mg/L were observed for no background correction, continuum source correction, and self-reversal correction, respectively. The ability of the techniques to correct for interferences caused by high concentrations of fluoride and sodium was investigated. The self-reversal technique was shown to remove interferences at concentration levels up to 10,000 mg/L. Chloride was determined in chloroacetic acid using calibration with chloride standards; continuum source correction had the best recovery value. These results suggest that both correction methods should be investigated for practical applications of flame MAS to obtain optimum analytical performance.     

火焰原子吸收光谱法测定火山矿泉水中的铁

采用火焰原子吸收光谱法测定天然火山矿泉水样中铁的含量.经测定火山附近有两处矿泉水中含有较高浓度的铁.方法线性范围为0.3-3.0mg/L,精密度和准确度较好.检出限为0.070mg/L.     

火焰原子吸收光谱法测定水中铁的测量不确定度评定

通过对影响测定结果的不确定度因素的分析和量化,评价了火焰原子吸收光谱法测定水样中铁的不确定度。计算得水中铁含量测定结果的扩展不确定度为0.015mg/L(veff=17)。     

Studies on Temporal Resolution Characteristics of Flame Temperature for Flame Atomic Absorption Spectroscopy

In this paper we report a method and experiment system developed by us to useful for temporal and spatial temperature distribution of the flame for atomic obsorption spectroscopy in detail. The method and system principle is based on the modified sodium line reversal method. The studies on temporal (20–50 μsec range) and spatial (π 1mm) resolution of the flame temperature aim at establishing optimum analysis conditions and improving analysis characteristics of flame atomic absorption/emission spectroscopy.     

火焰原子吸收和发射光谱法测定盐湖卤水中的钙

在波长422.7nm下,用火焰原子吸收和发射光谱法测定了盐湖卤水中钙的含量,考察了酸度及共存离子对测定结果的影响,并对两种方法的优缺点进行了比较.结果表明,原子吸收光谱法受酸度及共存离子的影响较小,火焰发射光谱法测定钙的灵敏度比原子吸收光谱法高,两种方法的RSD均小于2%,加标回收率介于103.7%-107.2%.     

Interference Effects from Easily Ionizable Elements in Flame AES and ICP‐OES: A Proposed Simplified Rate Model Based on Collisional Charge Transfer Between Analyte and Interferent Species

The effects of excess Na and K on K and Mg atom line emission in the air‐acetylene flame and of excess Li and K on Ca, Mg, and Sr atom and ion lines in inductively coupled plasma spectroscopy were studied using emission signal ratios, I′/I as probes, where I′ and I are the emission readings in the presence and absence of the interferent respectively. The I′/I plots as a function of analyte concentration in the test solution for the ICP experiments were similar to those obtained for the flame experiments in the analytical range 0–10 mg/L. A simplified rate model based on analyte excitation via charge transfer between analyte ions and activated interferent atoms is proposed to account for the emission signal enhancement observed at low analyte concentrations (<1 mg/L) for both ICP‐AES and flame atomic emission spectroscopy (AES). Data are presented showing good agreement between experimental E′ calibration curves and theoretical E′ calibration curves computed using the simplified rate model.     

火焰原子吸收光谱法测定废水中的重金属离子

采用火焰原子吸收光谱法测定了废水中的重金属离子,测定结果为:Cu,2.89mg/L;Mn,1.08mg/L;Pb,0.98mg/L;Zn,0.96mg/L;Fe,0.95mg/L;Cr,0.10mg/L;Cd,0.08mg/L。相对标准偏差分别为:2.3%,1.9%,2.0%,1.8%,1.5%,2.3%,1.4%。     

火焰原子吸收光谱法测定人工海水中铁的不确定度评定

对火焰原子吸收光谱法测定人工海水中铁的测量不确定度来源进行了分析,并对各不确定度分量进行了量化,求得合成标准不确定度和扩展不确定度分别为0.027mg/L和0.053mg/L.     

分光光度法测定日化品中的三氯生

建立了分光光度法测定日化品中三氯生的方法。在酸性条件下,亚硝酸钠和对氨基苯磺酸生成重氮盐,三氯生在碱性条件下与此重氮盐发生偶合反应,形成的黄色偶氮化合物,其在452nm处有最大吸收。三氯生浓度在0.075—30mg/L范围内呈良好的线性关系,检出限为0.075mg/L。本方法成功应用于日化产品中三氯生的测定,与高效液相色谱法相比,结果令人满意。     

溪黄草及其近缘种中微量元素含量的测定与分析

采用干式灰化法处理样品,HNO3溶解灰化残渣,用火焰发射法和火焰原子吸收光谱法测定了15个溪黄草及其近缘种中的K、Na、Ca、Mg、Fe、Mn和Cu共7种微量元素的含量。结果表明:溪黄草及其近缘种中含有丰富的K、Na、Ca、Mg、Fe、Mn和Cu等对人体有益的微量元素,各元素在实验范围内,线性关系良好,加标回收率在89.3%～100.0%之间,相对标准偏差(n=3)为0.2%～3.7%。