LaGoy P K
ICF-Clement Associates, Inc., Washington, D.C. 20006.
Risk Anal. 1987 Sep;7(3):355-9. doi: 10.1111/j.1539-6924.1987.tb00471.x.
Assessing the risks to human health posed by contaminants present in soil requires an estimate of likely soil ingestion rates. In the past, direct measurements of soil ingestion were not available and risk assessors were forced to estimate soil ingestion rates based on observations of mouthing behavior and measurements of soil on hands. Recently, empirical data on soil ingestion rates have become available from two sources (Binder et al., 1986 and van Wijnen et al., 1986). Although preliminary, these data can be used to derive better estimates of soil ingestion rates for use in risk assessments. Estimates of average soil ingestion rates derived in this paper range from 25 to 100 mg/day, depending on the age of the individual at risk. Maximum soil ingestion rates that are unlikely to underestimate exposure range from 100 to 500 mg. A value of 5,000 mg/day is considered a reasonable estimate of a maximum single-day exposure for a child with habitual pica.
评估土壤中污染物对人体健康造成的风险需要估算可能的土壤摄入量。过去，无法直接测量土壤摄入量，风险评估人员不得不根据对口部行为的观察和手上土壤的测量来估算土壤摄入量。最近，从两个来源获得了关于土壤摄入量的经验数据（Binder等人，1986年和van Wijnen等人，1986年）。尽管这些数据是初步的，但可用于得出更准确的土壤摄入量估算值，以用于风险评估。本文得出的平均土壤摄入量估算值为每天25至100毫克，具体取决于受风险影响个体的年龄。不太可能低估暴露量的最大土壤摄入量为100至500毫克。对于有习惯性异食癖的儿童，5000毫克/天的值被认为是最大单日暴露量的合理估算值。
