Inter-comparison of Low-cost Sensors for Measuring the Mass Concentration of Occupational Aerosols.
Inter-comparison of Low-cost Sensors for Measuring the Mass Concentration of Occupational Aerosols.
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DOI：
10.1080/02786826.2016.1162901
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Peters TM
中科院分区：
文献类型：
--
作者：
Sousan S;Koehler K;Thomas G;Park JH;Hillman M;Halterman A;Peters TM
低成本传感器可有效测量家庭环境气溶胶和二手烟的质量浓度，但其在与职业环境相关的浓度下的使用尚未得到证实。我们使用三种类型的低成本传感器（Dylos 的 DC1700 和 Sharp 的两种商品传感器）、气溶胶光度计和浓度高达 6500 μg/m3 的参考仪器测量了四种气溶胶（盐、亚利桑那州道路灰尘、焊接烟雾和柴油机尾气）的浓度。原始输出用于评估传感器精度并开发方程来计算质量浓度。 EPA 和 NIOSH 协议用于评估使用低成本传感器与参考仪器相比估算的质量浓度。 DC1700 的检测效率范围为 0.1 μm 时的 0.04% 到 5 μm 时的 108%，正如预期的那样，尽管观察到细颗粒和粗颗粒的错误分类。 DC1700 的原始输出比两个 Sharp 设备（CV = 25% 和 17%）具有更高的精度（较低的变异系数，CV = 7.4%），这一发现归因于制造商校准的差异。气溶胶类型强烈影响传感器响应，表明需要进行现场校准以将传感器输出转换为质量浓度。然而，一旦校准，用低成本传感器估算的质量浓度与参考仪器的质量浓度高度相关（R2=0.99）。这些结果表明，DC1700 和 Sharp 传感器可用于估算与工作场所相关浓度的气溶胶质量浓度。
Low-cost sensors are effective for measuring the mass concentration of ambient aerosols and secondhand smoke in homes, but their use at concentrations relevant to occupational settings has not been demonstrated. We measured the concentrations of four aerosols (salt, Arizona road dust, welding fume, and diesel exhaust) with three types of low-cost sensors (a DC1700 from Dylos and two commodity sensors from Sharp), an aerosol photometer, and reference instruments at concentrations up to 6500 μg/m3. Raw output was used to assess sensor precision and develop equations to compute mass concentrations. EPA and NIOSH protocols were used to assess the mass concentrations estimated with low-cost sensors compared to reference instruments. The detection efficiency of the DC1700 ranged from 0.04% at 0.1 μm to 108% at 5 μm, as expected, although misclassification of fine and coarse particles was observed. The raw output of the DC1700 had higher precision (lower coefficient of variation, CV = 7.4%) than that of the two sharp devices (CV = 25% and 17%), a finding attributed to differences in manufacturer calibration. Aerosol type strongly influenced sensor response, indicating the need for on-site calibration to convert sensor output to mass concentration. Once calibrated, however, the mass concentration estimated with low-cost sensors was highly correlated with that of reference instruments (R2=0.99). These results suggest that the DC1700 and Sharp sensors are useful in estimating aerosol mass concentration for aerosols at concentrations relevant to the workplace.
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影响因子：
5.2
作者：
Semple, Sean;Apsley, Andrew;MacCalman, Laura
通讯作者：
MacCalman, Laura
影响因子：
4.5
作者：
Gorner, P;Bemer, D;Fabries, JF
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Fabries, JF
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3.7
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Klepeis NE;Hughes SC;Edwards RD;Allen T;Johnson M;Chowdhury Z;Smith KR;Boman-Davis M;Bellettiere J;Hovell MF
通讯作者：
Hovell MF
影响因子：
4.4
作者：
Grover, BD;Kleinman, M;Ambs, JL
通讯作者：
Ambs, JL
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3.3
作者：
Hart JE;Eisen EA;Laden F
通讯作者：
Laden F