Target concentrations are nominal concentrations expected in this study.

Measured concentrations are the mean±standard deviation (stdev) of actual drill cutting (DC), barite (BA) and bentonite (BE) particles concentration (mg.l-1) in the cones in both studies estimated from filters. Actual concentration are the rounded values for DC, BA and BE mean measured concentration, further used in this article to describe the exposure.本研究两项实验中，通过滤膜估算得到的锥形收集器内实际钻屑（drill cutting，DC）、重晶石（barite，BA）与膨润土（bentonite，BE）的颗粒浓度（单位：mg·L⁻¹）的实测值，均以平均值±标准偏差（standard deviation，缩写stdev）形式给出。其中，DC、BA、BE的平均实测浓度经取整后得到的数值即为实际浓度，将作为本文后续描述暴露水平的依据。