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相关概念视频

Testing Water Quality01:14

Testing Water Quality

182
When the quality of water for concrete preparation is uncertain, its impact on the setting time of cement and compressive strength of mortar is assessed by comparison with de-ionized or distilled water benchmarks. American Society for Testing and Materials (ASTM) C1602 requires the setting times to be within 90 minutes of the control, British Standard (BS) 3146:1980 allows a 30-minute variance in the initial setting, while British Standards European Norm (BS EN) 1008 specifies initial setting...
182
Data Validation01:15

Data Validation

234
Method validation is a crucial process in analytical chemistry designed to confirm that a given method consistently produces reliable and high-quality results. This process is essential when a method is applied to different sample matrices or when procedural modifications are made, ensuring that the results meet acceptable standards across various applications.
Key parameters for method validation include:
234

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相关实验视频

Updated: Sep 10, 2025

Preparation and Testing of Impedance-based Fluidic Biochips with RTgill-W1 Cells for Rapid Evaluation of Drinking Water Samples for Toxicity
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[关于各种矿泉水中化物的开发方法的验证研究]

Hiroshi Sakuragi1, Masako Suzuki1, Hiroyuki Ohno1

  • 1Nagoya City Public Health Research Institute.

Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan
|August 20, 2025
PubMed
概括

一种新的方法可以准确地确定矿泉水中的化和化. 用酸盐缓冲剂稀释改善了pH调整,确保了这些水污染物的可靠结果.

科学领域:

  • 环境化学
  • 分析化学

背景情况:

  • 由于硬度和碳化度的差异,矿泉水对化物分析具有独特的挑战.
  • 现有的官方水龙头化物分析方法可能不适合MWs,在日本没有验证标准.
  • 对于精确的化物测定,预处理 pH 调整为大约 2.4,在某些 MW 中通常是无法实现的.

研究的目的:

  • 开发和验证一种可靠的方法来确定各种矿泉水中的化和化.
  • 解决现有方法在矿泉水矩阵中精确分析化物的局限性.

主要方法:

  • 开发并验证了一种用于同时确定化和化的方法.
  • 在样本预处理过程中使用酸盐缓冲剂进行了五倍稀释,以达到2. 4的目标pH值.
  • 根据已确定的准则进行验证,评估真实性和精确性 (RSD).

主要成果:

  • 在加入稀释步骤后,该方法的准确性提高了93.0%至103.8%.
  • 可重复性和实验室内可重复性 (RSD) 分别低于3. 83%和4. 68%,符合两种分析物的验证标准.
  • 这种方法成功地在以前有问题的MW样本中达到2.4的目标pH值.

结论:

关键词:
化物离子化离子染色学矿泉水验证情况

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  • 开发的方法,包括酸盐缓冲液稀释步骤,可以准确地确定各种矿泉水中的化和化.
  • 这种方法克服了处理前的pH调整挑战,确保矿泉水质量评估的可靠分析结果.
  • 经过验证的方法显示了商业矿泉水产品中这些化物种的常规分析的适用性.