Contaminants in Liquid Organic Fertilizers Used for Agriculture in Japan

Dao M. Hai, Xuchun Qiu, Hai Xu, Masato Honda, Mitsuyasu Yabe, Kiwao Kadokami, Yohei Shimasaki, Yuji Oshima

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


To provide an overview of anthropogenic contaminants in liquid organic fertilizers (LOFs), products from four biogas plants in Kyushu, Japan, were analyzed for a wide range of contaminants, including copper, cadmium, tributyltin (TBT), dibutyltin (DBT), perfluorooctane sulfonate, 952 semi-volatile organic compounds, and 89 antibiotics. The highest concentrations of copper (31.1 mg/L) and cadmium (0.08 mg/L) were found in LOFs from the Hita biogas plant. Only ofloxacin and sulfapyridine were detected in total 89 antibiotics screened. TBT, DBT, and perfluorooctane sulfonate were present at low concentrations in the LOFs from all four locations. Among the 952 semi-volatile organic compounds, 78 compounds were detected in at least one sample and were present at concentrations between 1.2 and 139.6 mg/L. On the basis of comparisons with previous studies and quality standards for the use of organic fertilizers, the concentrations of contaminants in the studied LOFs indicate that they might be safe for agricultural purposes.

Original languageEnglish
Pages (from-to)131-137
Number of pages7
JournalBulletin of Environmental Contamination and Toxicology
Issue number1
Publication statusPublished - Jul 2017

All Science Journal Classification (ASJC) codes

  • Toxicology
  • Pollution
  • Health, Toxicology and Mutagenesis


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