Department of Atmospheric Sciences, University of Utah, 135 S 1460 E, Room 819, Salt Lake City, UT 84112, USA.
Pulmonary Division, School of Medicine, University of Utah, 26 N 1900 E, Salt Lake City, UT 84132, USA.
Sensors (Basel). 2024 Feb 1;24(3):965. doi: 10.3390/s24030965.
Black carbon (BC) or soot contains ultrafine combustion particles that are associated with a wide range of health impacts, leading to respiratory and cardiovascular diseases. Both long-term and short-term health impacts of BC have been documented, with even low-level exposures to BC resulting in negative health outcomes for vulnerable groups. Two aethalometers-AethLabs MA350 and Aerosol Magee Scientific AE33-were co-located at a Utah Division of Air Quality site in Bountiful, Utah for just under a year. The aethalometer comparison showed a close relationship between instruments for IR BC, Blue BC, and fossil fuel source-specific BC estimates. The biomass source-specific BC estimates were markedly different between instruments at the minute and hour scale but became more similar and perhaps less-affected by high-leverage outliers at the daily time scale. The greater inter-device difference for biomass BC may have been confounded by very low biomass-specific BC concentrations during the study period. These findings at a mountainous, high-elevation, Greater Salt Lake City Area site support previous study results and broaden the body of evidence validating the performance of the MA350.
黑碳（BC）或烟尘含有超细燃烧颗粒，与广泛的健康影响有关，导致呼吸道和心血管疾病。BC 的长期和短期健康影响都有记录，即使是低水平的 BC 暴露也会导致弱势群体的健康状况恶化。两台黑碳光度计-AethLabs MA350 和 Aerosol Magee Scientific AE33-在犹他州布特富尔的犹他州空气质量部门的一个地点共同放置了将近一年。黑碳光度计的比较表明，仪器之间对于红外吸收 BC、蓝光 BC 和化石燃料源特定 BC 估算值的关系非常密切。在分钟和小时尺度上，仪器之间的生物质源特定 BC 估算值差异明显，但在日尺度上，由于高杠杆离群值的影响，它们变得更加相似，也许受其影响更小。在研究期间，生物质 BC 的仪器之间差异较大可能与非常低的生物质特定 BC 浓度有关。在山区、高海拔、大盐湖城地区的这一发现支持了先前的研究结果，并扩大了验证 MA350 性能的证据范围。
