However, when the components of the aerosol in the soil of the place where kosa was produced was compared with those in major cities in China, it was found that the latter included more sulfide ion, more nitrate ion and more lead (a heavy metal).
しかしながら、黄砂発生地の土壌・エアロゾルと中国主要都市のエアロゾルの成分を比較すると、後者のほうが硫酸イオンや硝酸イオン、重金属である鉛の濃度が高くなっていた。