On April 16, 2016, a series of earthquakes with a maximum magnitude of 7.0 struck Kumamoto Prefecture, Japan, and about 1,300,000 metric tons of land-derived debris (building materials, household appliances, furniture, and wood) required disposal. Because public lands were used as emergency debris storage sites, environmental contamination by organic micropollutants from the debris has been a public concern. To identify chemicals of concern in the soil, our research group used a novel scheme in the combination of comprehensive target analysis (CTA) with an automated identification and quantification system (AIQS) that made use of gas chromatography–mass spectrometry (GC-MS). CTA-AIQS identified a total of 120 organic micropollutants in the soil samples from the debris storage sites. The predominant chemical groups in debris soils were PAHs, plasticizers, and pesticides. Higher concentrations of pesticides (insecticides and fungicides) were detected in soil under waste wood because those chemicals were used as wood preservation and termiticides. Estimated hazard quotients of the detected chemicals via soil ingestion by children (a high-risk group) suggested that the health risk was probably negligible. It was concluded that CTA-AIQS would be a useful tool for emergencies such as natural disasters.

2016年4月16日，日本熊本县发生了一系列最高烈度为7.0的地震，需要处置约130万吨的土地衍生碎片（建筑材料，家用电器，家具和木材）。由于公共土地被用作应急废弃物存储地点，因此，废弃物中的有机微污染物对环境的污染一直是公众关注的问题。为了识别土壤中所关注的化学物质，我们的研究小组使用了一种新颖的方案，将综合目标分析（CTA）与利用气相色谱-质谱（GC-MS）的自动识别和定量系统（AIQS）相结合。CTA-AIQS从碎片存储地点的土壤样品中识别出总共120种有机微污染物。碎片土壤中主要的化学基团是PAHs，增塑剂和农药。在废木材下面的土壤中检测到较高浓度的农药（杀虫剂和杀真菌剂），因为这些化学物质用作木材防腐剂和杀白蚁剂。儿童（高危人群）通过土壤摄入对检测到的化学物质的估计危险商表明，健康风险可能微不足道。结论是CTA-AIQS将是应对自然灾害等紧急情况的有用工具。