Particulate matter concentration from filtered water bottle AT_II-119/4_13-1

Dregs means the water below the spigot was sampled on a separate filter. MP means a Millipore filter funnel was used to filter the water rather than in-line filtration because..."Dregs"指取样龙头下方的水样通过单独滤膜完成采样；"MP"指代使用密理博（Millipore）滤膜漏斗进行水样过滤，而非采用在线过滤，原因是……