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首页> 外文期刊>Environmental Science & Technology >In Situ Spectroscopic Analysis and Quantification of [Tc(CO)_3]~+ in Hanford Tank Waste
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In Situ Spectroscopic Analysis and Quantification of [Tc(CO)_3]~+ in Hanford Tank Waste

机译:汉福德坦克废物中[Tc(CO)_3]〜+的原位光谱分析和定量

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摘要

The quantitative conversion of nonpertechnetate [Tc(CO)(3)](+) species in nuclear waste storage tank 241-AN-102 at the Hanford Site is demonstrated. A waste sample containing the [Tc(CO)(3)](+) species is added to a developer solution that rapidly converts the nonemissive species into a luminescent complex, which is detected spectroscopically. This method was first demonstrated using a [Tc(CO)(3)](+) sample of nonwaste containing matrix to determine a detection limit (LOD), resulting in a [Tc(CO)(3)](+) LOD of 2.20 X 10(-7) M, very near the LOD of the independently synthesized standard (2.10 X 10(-7) M). The method was then used to detect [Tc(CO)(3)](+) in a simulated waste using the standard addition method, resulting in a [Tc(CO)(3)](+) concentration of 1.89 X 10(-5) M (within 27.7% of the concentration determined by beta liquid scintillation counting). Three samples from 241-AN-102 were tested by the standard addition method: (1) a 5 M Na adjusted fraction, (2) a fraction depleted of Cs-137, and (3) an acid-stripped eluate. The concentrations of [Tc(CO)(3)](+) in these fractions were determined to be 9.90 X 10(-6) M (1), 0 M (2), and 2.46 x 10(-6) M (3), respectively. The concentration of [Tc(CO)(3)](+) in the as-received AN-102 tank waste supernatant was determined to be 1.84 X 10(-5) M.
机译:证明了汉福德基地核废料储存罐241-AN-102中非高net酸盐[Tc(CO)(3)](+)物种的定量转化。将包含[Tc(CO)(3)](+)物质的废物样品添加到显影剂溶液中,该溶液可将非发射性物质快速转换为发光复合物,该发光复合物可通过光谱法进行检测。此方法首先使用不含废物的基质的[Tc(CO)(3)](+)样品确定检测限(LOD)进行了验证,结果得出[Tc(CO)(3)](+)LOD为2.20 X 10(-7)M,非常接近独立合成标准品的检测限(2.10 X 10(-7)M)。然后,使用标准添加方法将该方法用于检测模拟废物中的[Tc(CO)(3)](+),导致[Tc(CO)(3)](+)的浓度为1.89 X 10( -5)M(通过β液体闪烁计数确定的浓度在27.7%内)。通过标准添加方法测试了来自241-AN-102的三个样品:(1)5 M Na调整的馏分;(2)贫Cs-137的馏分;和(3)酸剥离的洗脱液。确定这些部分中的[Tc(CO)(3)](+)浓度为9.90 X 10(-6)M(1),0 M(2)和2.46 x 10(-6)M( 3)。收到的AN-102坦克废物上清液中的[Tc(CO)(3)](+)浓度确定为1.84 X 10(-5)M。

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  • 来源
    《Environmental Science & Technology》 |2018年第14期|7796-7804|共9页
  • 作者单位

    Univ Cincinnati, Dept Chem, Cincinnati, OH 45221 USA;

    Pacific Northwest Natl Lab, Richland, WA 99352 USA;

    Pacific Northwest Natl Lab, Richland, WA 99352 USA;

    Pacific Northwest Natl Lab, Richland, WA 99352 USA;

    Pacific Northwest Natl Lab, Richland, WA 99352 USA;

    Univ Cincinnati, Dept Chem, Cincinnati, OH 45221 USA;

    Pacific Northwest Natl Lab, Richland, WA 99352 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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