Determination of potassium content as principal components in pyrotechnic compositions used for fireworks and firecrackers based on inductively coupled plasma optical emission spectrometric approach （ICP-OES）

Inductively coupled plasma optical emission spectrometric approach（1CP-OES） is used to determine the potassium content as principal component in pyrotechnic compositions used for fireworks and firecrackers. Element of potassium is conunonly found in potassium nitrate and potassium perchlorate in pyrotechnic compositions in fireworks and firecrackers. Statistical analysis shows that potassium nitrate content in pyrotechnics is between 10% to 60% and the potassium perchlorate content is between 20% to 70%,which counted in the content of potassium element is between 4% to 23%. Concept of this method： considering the weight of the sample is 400rag,constant volume is 1L and the concentration of potassium is between 10 mg/L to 90 mg/L in sample solution, the determination scope of the method for the potassium content would be between 1% to 23%.Further experiments proved that the fitting correlation coefficient of potassium calibration curve is 0.9997 or higher, recovery is 89.15%-100.23%.The allowable differential value is 0.4% between two single tests under repeatable conditions. This method can completely satisfy the requirements of the fireworks and firecrackers industry with high accuracy and good precision.

Determination of magnesium and aluminum content as principal components in pyrotechnic compositions used for fireworks and firecrackers based on inductively coupled plasma optical emission spectrometric approach （ICP-OES）

Inductively coupled plasma optical emission spectrometric approach（ICP-OES）is used to determine the magnesium and aluminum content as principal components in pyrotechnic compositions used for fireworks and firecrackers. Elements of magnesium and aluminum are commonly found in aluminum powder or magnesium-aluminum alloy powder in pyrotechnic compositions in fireworks and firecrackers. Statistical analysis shows that the magnesium content in pyrotechnics is between 8% to 30% and the aluminum content is between 8% to 35%（roughly）.Concept of this method： suppose the weight of the sample is 400rag,constant volume is IL and the concentlation of magnesium and aluminum is between 12mg/L to 160mg/L in sample solution, the determination scope of the method for magnesium and aluminum content would be between 3% to 40%.Further experiments proved that the fitting correlation coefficient of the magnesium calibration curve is 0.9999 or higher, recovery is 101.01% -101.96%.The fitting correlation coefficient of the aluminum calibration curve is 0.9999 or higher, recovery is 99.36%-103.07%. The allowable differential value is 0.4% between two single tests under repeatable conditions. This method can completely satisfy the requirements of the fireworks and firecrackers industry with high accuracy and good precision.

微波密闭消解 - 等离子体原子发射光谱测定石油化工催化剂中负载元素含量

微波密闭消解预处理等离子体原子发射光谱（ＩＣＰＡＥＳ）测定石油化工用催化剂中金属及类金属元素Ｎｉ、Ｂ、Ｐ、Ｆｅ、Ｃｕ、Ｃｏ、Ｍｎ、Ｍｏ、Ｚｎ、Ｗ及Ａｇ的含量，溶样速度快，易挥发性元素不损失。各元素的回收率在９０％～１１０％，相对标准偏差（ｎ＝７）≤１０％，实际样品测定的各元素数据与成熟的压力溶弹法相符，能较好地满足工艺要求。

ICPES法测定地质样品中钒的不确定度分析

作者通过电感藕合等离子体全谱直读发射光谱仪测定地质样品中钒的不确定度评定的实践,分析了该方法测定过程中的不确定度来源,建立了相关数学模型,并计算各标准不确定度、合成标准不确定度、扩展不确定度及测定结果的置信区间。

铝酸钇激光晶体中双掺稀土元素铒、镱的电感耦合等离子体原子发射光谱分析

用磷酸溶解样品在不分离基体的情况下,用ICP-AES内标法直接测定铝酸钇激光晶体中双掺铒、镱,取得满意的结果。回收率98-105%,相对标准偏差3%。文中还研究了溶液中的磷酸浓度,基体浓度对被测元素的影响,以及双掺被测元素相互间的影响。

电感耦合等离子体原子发射光谱(ICP-AES)法测定出口食品级磷酸中铜、镍、铅、锰、镉、钛

【目的】建立快速、准确并可同时测定食品级磷酸中铜、镍、铅、锰、镉、钛含量的方法。【方法】食品级磷酸样品直接稀释20倍后，用ICP—AES仪测定溶液中待测元素特征谱线的强度，采用标准品加入法定量。【结果】本方法测定食品级磷酸中铜、镍、铅、镉、钛的测定低限为1mg／kg，锰的测定低限为0．1mg／kg。室间相对标准偏差RSD〈13％，各项回收率85%-112％。【结论】能够满足出入境检验检疫实验室以及企业产品质量把关对食品磷酸中多种金属含量的一次性测定的需要。

食品中铝含量测定的研究进展

文章系统地介绍了食品中铝测定的前处理方法和测定方法,并对各种方法的优缺点进行了比较。文章共引用文献21篇。

Laser Induced Breakdown Spectroscopy for Comparative Quantitative Analysis of Betel Leaves from Pakistan

Laser induced breakdown Spectroscopy(LIBS)was applied for the elemental analysis and exposure of the heavy metals in betel leaves in air.Pulsed Nd∶YAG(1064 nm)in conjunction with a suitable detector(LIBS 2000+,Ocean Optics,Inc)having the optical resolution of 0.06 nm was used to record the emission spectra from 220 to 720 nm.Elements like Al,Ba,Ca,Cr,Cu,P,Fe,K,Mg,Mn,Na,P,S,Sr,and Zn were found to present in the samples.The relative abundances of the observed elements were calculated through standard calibration curve method,integrated intensity ratio method,and weight percentage LIBS approach.LIBS findings were validated by comparing its results with the results obtained using a typical analytical technique of Inductively Coupled plasma-optical emission spectroscopy(ICP-OES).Limit of detection(LOD)of the LIBS system was also estimated for heavy metals.The experience gain through this work implies that LIBS could be highly applicable for testing the quality and purity of food products.

电感耦合等离子体发射光谱(ICP-OES)法同时测定高纯钼中多种痕量元素

建立了电感耦合等离子体发射光谱(ICP-OES)法测定钼中Co、Cu、Fe、Mg、Mn、W、Zr元素含量的方法。确定了溶样方法和分析谱线,采用基体匹配消除干扰。对方法精密度和准确度进行实验,实验结果表明,各元素的相对标准偏差均小于3%,加标回收率在81.0%~110%。所建方法快速、准确,适用于钼中多元素同时测定。

ICP-AES法测定土壤样品中的硼

建立了用ICP-AES测定土壤中硼的分析方法,并对各种最佳分析条件进行探讨。在最佳条件下,用该方法对国家一级标准物质中的痕量硼进行了测定,结果与标准值相符。本法的检出限为0.09mg/kg,精密度为2.30%～4.55%(RSD,n=10),加标回收率为95.0%～103.3%。本方法快速简便,能满足科研及生产中硼的测量要求,尤其适合大批量土壤样品的检测。

电感耦合等离子体发射光谱法测定钼化学产品中的硫含量

提出了电感耦合等离子体发射光谱法测定钼化学产品中硫含量,优化了仪器硫元素的分析谱线,对最佳测定条件进行了试验探讨,验证了测定方法的准确性和稳定性。方法的检出限(3 s)为0.012 mg/L,方法的回收率在98.0%~104%之间,测定值的相对标准偏差(n=11)均小于4%。方法用于钼酸铵及高纯三氧化钼样品分析,所得结果与化学法测定结果相符合。方法简单实用,准确度高,能满足钼化学产品质量检验的需要。

聚氨酯泡沫分离-ICP-AES测定混合铅锌精矿中铊含量

【目的】利用聚氨酯泡沫分离富集,建立电感耦合等离子体原子发射光谱法(Inductively Coupled Plasma Atomic Emission Spectrometric,ICP-AES)测定混合铅锌精矿中铊含量的方法。【方法】样品经混合酸(HClHNO_3-HClO_4-H_2SO_4)缓慢溶解后,用聚氨酯泡沫分离富集,并在HNO_3溶液中解脱,用ICP-AES法测定其中的Tl含量。【结果】通过分离富集法将基体分离,消除了基体效应和共存元素间的谱线干扰,降低了方法的检出限。实验表明,建立的方法线性良好,相关系数为0.999 1,方法的检出限为0.12mg/L,方法加标回收率为96.0%~106.0%,相对标准偏差小于5%。【结论】测定的结果准确可靠,能满足混合铅锌精矿中铊含量的测定需求。

电感耦合等离子体原子发射光谱法分析铝及铝合金的新旧标准比较

为帮助实验室更好地理解和执行新检测标准,以减少检测误差,本文对电感耦合等离子体原子发射光谱法分析铝及铝合金的检测标准进行研究,基于比较法,从测量范围、方法提要、试剂、仪器、分析步骤、试验数据处理、精密度等方面,比较了GB/T 20975.25-2020和GB/T 20975.25-2008的差异,探讨了标准还需要完善的地方。结果表明,新版标准较旧版增加了15个可检测元素,元素含量范围、定容体积和精密度要求有所调整,并增加了一种溶样方法。

Heavy Metals in Lipstick Products Marketed in Saudi Arabia

The present study reports the content of 14 heavy metals (Al, Fe, Ti, Ag, As, Ba, Cd, Co, Cr, Cu, Mn, Ni, Pb, and Zn) in twenty-two (n = 22) lipstick products of imported and locally manufactured at the local market in Jeddah, Saudi Arabia using Inductivity Coupled Plasma-Optical Emission Spectrophotometer (ICP-OES). The overall average contents of Al, Fe, Ti, Ag, As, Ba, Cd, Co, Cr, Cu, Mn, Ni, Pb, and Zn were 3131.18 ± 0.09, 9642.92 ± 0.079, 46.59 ± 0.109, 0.545 ± 0.009, 2.041 ± 0.024, 1371.439 ± 0.085, 0.134 ± 0.008, 4.242 ± 0.02, ND, 3.934 ± 0.03, 19.712 ± 0.012, 20.196 ± 0.056, 0.725 ± 0.012, and 858.666 ± 0.083 μg/g, respectively. The correction coefficient of the results is up to 0.9995, showing an excellent linear relationship between metal concentrations in samples. The results also revealed that, the total concentrations of toxic metals in various samples ranged from 1201.35 - 60,800.36 μg/g. The dark-colored lipstick samples 1B, 2B, 3B, 4B, 5B, 7B, B8, 9B, and 10B revealed high content of total toxic metals compared to the light-colored lipstick samples 1A, 2A, 3A, 4A, 4C, 5A, 7A, 8A, 9A, and 10A. The concentrations of Al, Fe, Ba, and Zn in the samples within each class under investigation are relatively high whereas the concentrations of Ag, As, Cd, Co, Cu, and Pb are lowest;and Ti, Mn, and Ni contents were below 100 μg/g. Chromium was not detected in any sample. Since no safe limits for most of these metals relating to cosmetic products are available in Saudi Arabia, it is hard to ascertain whether the values obtained in this study are relatively high or low. Prolonged use of products containing these elements may pose a threat to human health and could damage the environment.

电感耦合等离子发射光谱法测定铝合金中镁

叙述了应用电感耦合等离子发射光谱法分析测定铝合金中的镁含量的方法,确定了创建该分析方法的相关条件,准确度、精密度的实验,得到了较好的精密度和准确度。该方法简便,可靠,可以获得满意的分析结果。

电感耦合等离子体光谱法测定童鞋中的铬含量

采用微波消解-电感耦合等离子体光谱法测定市场上不同厂家生产的童鞋中铬含量,对结果进行分析研究,找出重金属铬超标的原因并提出解决的对策,为降低健康安全风险,提高产品质量提供一定的参考依据。

A statistic comparison of multi-element analysis of low atmospheric fine particles(PM_(2.5)) using different spectroscopy techniques

Over the past few decades,the metal elements(MEs)in atmospheric particles have aroused great attention.Some well-established techniques have been used to measure particlebound MEs.However,each method has its own advantages and disadvantages in terms of complexity,accuracy,and specific elements of interest.In this study,the performances of inductively coupled plasma-optical emission spectrometry(ICP-OES)and total reflection X-ray fluorescence spectroscopy(TXRF)were evaluated for quality control to analyze data accuracy and precision.The statistic methods(Deming regression and significance testing)were applied for intercomparison between ICP-OES and TXRF measurements for same lowloading PM_(2.5)samples in Weizhou Island.The results from the replicate analysis of standard filters(SRM 2783)and field filters samples indicated that 10 MEs(K,Ca,V,Cr,Mn,Fe,Ni,Cu,Zn,and Pb)showed good accuracies and precision for both techniques.The higher accuracy tended to the higher precision in the MEs analysis process.In addition,the interlab comparisons illustrated that V and Mn all had good agreements between ICP-OES and TXRF.The measurements of K,Cu and Zn were more reliable by TXRF analysis for low-loading PM_(2.5).ICP-OES was more accurate for the determinations for Ca,Cr,Ni and Pb,owing to the overlapping spectral lines and low sensitivity during TXRF analysis.The measurements of Fe,influenced by low-loading PM_(2.5),were not able to determine which instrument could obtain more reliable results.These conclusions could provide reference information to choose suitable instrument for the determination of MEs in low-loading PM_(2.5)samples.

Simultaneous Determination of Bismuth,Lead,and Iron in Water Samples by Optimization of USAEME and ICP–OES via Experimental Design

Ultrasound-assisted emulsification–microextraction followed by inductively coupled plasma–optical emission spectrometry was utilized for simultaneous pre-concentration and trace detection of lead,bismuth,and iron in water samples.Disodium N,N -bis(salicylidene)ethylenediamine and trichloroethylene were used as chelating agent and extraction solvent,respectively.The parameters of interest were volume of extraction solvent,temperature,and concentrations of salt and chelating agent.A fractional factorial design was developed to identify these parameters and how they vary with one another.The results demonstrated that the concentrations of salt and chelating agent affected extraction efficiency.Subsequently,a central-composite design was used to acquire optimum levels of effective parameters.The optimal conditions were 160.7 mg L^(−1) and 1.77%(w/v)for concentration of chelating agent and salt,respectively.The linear dynamic ranges were determined to be 1–1000μg L^(−1) for Pb and Bi,and 10–1000μg L^(−1) for Fe.The correlation coefficient(R2)was 0.990–0.995.The limits of detection were 0.54–0.78μg L^(−1).The relative standard deviation(concentration=200μg L^(−1),n=8)was in the range of 2.0–4.3%.This method was successfully applied for the trace detection of Pb,Bi,and Fe in freshwater samples of waterfall and spring and satisfactory relative recoveries(96.2–99.6%)were obtained.

ICP-AES测定复合食品包装材料中硼含量条件的探讨

研究电感耦合等离子体原子发射光谱法（ICP-AES）测定复合食品包装材料中硼含量的最佳仪器条件。对样品的预处理条件和仪器参数分别进行调试,得出最佳条件和仪器参数。结果表明,在所选择的预处理条件和仪器参数条件下,方法的线性良好,在线性范围0~0.500 mg/L内,相关系数达0.999 8,测试样品的准确度和精密度也符合要求。该方法适合批量复合食品包装材料中硼含量的测定。

复合食品包装材料中硼的测定

目的：研究超高压微波消解-电感耦合等离子体原子发射光谱法测定复合食品包装材料中硼含量的仪器参数条件。方法：采用超高压力消解罐消解对样品进行预处理,然后用电感耦合等离子体原子发射光谱法对样品中硼含量进行测定。结果：在所选择的最佳仪器条件下,方法的线性良好,在线性范围0~0.500 mg/L内,相关系数达0.9998,测试样品的准确度和精密度也符合要求。结论：测定样品中流通领域复合包装材料硼含量要高于生产领域的;3层材质的复合包装袋硼含量高于2层材质的;PE材质的硼含量比PP材质的稍高。