Spectroscopy and Spectral Analysis, Volume. 42, Issue 7, 2101(2022)
Uncertainty Evaluation and Method Improvement of Determination of Copper, Lead, and Zinc in Rocks by Atomic Absorption Spectrometry
Figures & Tables(6)
Fig. 2. Relative uncertainty of copper, lead, and zinc in core sample
Table 1. Instrument operating parameters
View tableView in ArticleTable 1. Instrument operating parameters
元素 Cu Pb Zn 波长/nm 324.7 283.3 213.9 光谱带宽/nm 0.4 0.4 0.4 灯电流/mA 3.0 2.0 3.0 滤波系数 0.6 0.6 1.0 积分时间/s 3.0 3.0 3.0 燃烧器高度/mm 5.0 6.0 6.0 火焰类型 Air-C2H2 Air-C2H2 Air-C2H2
Table 2. Measurement results of the blank samples and detection limits
View tableView in ArticleTable 2. Measurement results of the blank samples and detection limits
测定
元素测定值/(μg·mL-1) 标准
偏差检出限/
(μg·mL-1)0.022 0.014 0.014 0.014 Cu 0.006 0.022 0.022 0.014 0.005 0.016 0.022 0.022 0.022 0.014 0.147 0.147 0.082 0.147 Pb 0.082 0.147 0.147 0.082 0.032 0.096 0.082 0.147 0.147 0.147 0.004 0.006 0.004 0.004 Zn 0.004 0.006 0.004 0.006 0.001 0.003 0.006 0.004 0.006 0.004
Table 3. Measurement results of standard samples
View tableView in ArticleTable 3. Measurement results of standard samples
参数 铜 铅 锌 均值/(μg·g-1) 3.263 30.683 28.046 推荐值/(μg·g-1) 3.200 31.000 28.000 相对误差/% 1.969 -1.023 0.164 相对误差允许限/% 21.21 15.66 15.93 相对偏差允许限/% 30.00 22.15 22.53
Table 4. Calculation results and relevant parameters of standard curve and samples
View tableView in ArticleTable 4. Calculation results and relevant parameters of standard curve and samples
铜 铅 锌 标准浓度/
(μg·mL-1)平均吸光度 标准浓度/
(μg·mL-1)平均吸光度 标准浓度/
(μg·mL-1)平均吸光度 1 0.00 0.001 0.0 0.000 0.0 0.004 2 0.10 0.013 0.5 0.007 0.4 0.150 3 0.20 0.025 1.0 0.015 0.8 0.295 4 0.30 0.038 1.5 0.023 1.2 0.427 5 0.40 0.051 2.0 0.030 1.6 0.561 6 0.50 0.065 2.5 0.038 2.0 0.690 0.25 1.25 1.00 标准曲线 A=0.127 7c+0.000 2 A=0.015 3c-0.000 2 A=0.342 5c+0.012 相关系数 0.999 6 0.999 8 0.999 7 岩心样品均值/(μg·mL-1) 0.198 6 1.456 6 1.232 7 标准样品均值/(μg·mL-1) 0.130 5 1.227 3 1.121 8 s 0.000 4 0.000 2 0.003 6
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Ya-ru HOU, Ji-long LU, Yu-chao FAN, [in Chinese], Xiao-dan TANG, Qiao-qiao WEI, Jin-ke GUO, Wei ZHAO. Uncertainty Evaluation and Method Improvement of Determination of Copper, Lead, and Zinc in Rocks by Atomic Absorption Spectrometry[J]. Spectroscopy and Spectral Analysis, 2022, 42(7): 2101
Paper Information
Category: Orginal Article
Received: May. 26, 2021
Accepted: --
Published Online: Nov. 16, 2022
The Author Email: HOU Ya-ru (2096689260@qq.com)
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