| 激光热透镜光谱法测定地质样品中微量钼的研究 |
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| 引用本文： | 杨胜科,阎宏涛.激光热透镜光谱法测定地质样品中微量钼的研究[J].西北地质科学,1995,16(2):73-76. |
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| 作者姓名： | 杨胜科 阎宏涛 |
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| 作者单位： | 西安地质学院，西北大学 |
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| 摘 要： | 作者对激光热透镜光谱法测定微量钼进行了研究．试验表明，在丙酮介质中，Ｍｏ６＋能被还原成Ｍｏ５＋并形成钼蓝同多酸，最大吸收彼长在６７０ｕｍ处，利用Ｈｅ－Ｎｅ激光器输出的６３２．８ｕｍ的激光作光源，进行微量钼的热透镜法分析测定．两酮的存在能增强热透镜信号强度。钼含量在０．０１—２．０μｇ／ｍＬ范围内与激光热透镜信号强度呈良好的线性关系，方法检出限为０．００５μｇ／ｍＬ钼，已用于地质样品中微量钼的高灵敏度测定．结果满意．
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| 关 键 词： | 激光光谱 热透镜 钼 地质样品 |
DETERMINATION OF MICRO MOLYBDENUM IN GEOLOGICAL SAMPLES BY TLS |
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| Yang Shengke.DETERMINATION OF MICRO MOLYBDENUM IN GEOLOGICAL SAMPLES BY TLS[J].Northwest Geoscience,1995,16(2):73-76. |
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| Authors: | Yang Shengke |
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| Abstract: | A rapid thermal lens spectrophotometry was developed for the determination of micro molybdentlm in geological samples. The results indicated that Mo5 was reduced to Mo5 ,and formed molybdenum blue isopoly-acid in the medium of acetone solution. The wavelength of absorption maximum was 670 um. Micro molybdenum was determined by TLS with He-Ne laser as light source, the linear relationship between relative intensity of TLS signal and molybdenum concentration ranging from 0. of to 2. 0 ig/mL is quite clear. its detection limit is 0. 005 ig/mL. This method has been applied to the determination of molybdenum in geolgoical samples with satisfactory result. |
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| Keywords: | laser spectrometry thermal lens spectrophotometry molybdenum isopoly-acid |
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