Development of monitoring method of deuterium oxide in the atmosphere and its application to phytoremediation study using plants

2015 Fiscal Year Final Research Report

• Project/Area Number: 25281010
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: University of Shizuoka
• Principal Investigator: Tani Akira 静岡県立大学, 食品栄養科学部, 教授 (50240958)
• Co-Investigator(Kenkyū-buntansha): KATO SYUNGO 首都大学東京, 都市環境科学研究科, 准教授 (20381452)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 陽子移動反応質量分析計 / トルエン / 重水 / ファイトレメディエーション / 経根吸収 / 蒸散

Outline of Final Research Achievements

Using proton-transfer reaction mass spectrometry (PTR-MS), m/z 20 and 38 were found to originate from deuterium oxide. Sensitivity analysis showed that m/z 20 could provide lower detection limit. As humidity affect ion count rate of m/z 20, an equation was determined to correct the ion count for humidity. Water including deuterium oxide and organic compounds was supplied to soil in a potted tree and, using the equation, volatiles from the leaves were able to be monitored and the transportation speed of the compounds from root to leaf were determined. Using 13C toluene, we found that a larger amount of toluene was remained in the root and least partitioned to leaf. Larger abundance of 13C was observed in the dark respiration of the leaves, suggesting that some portion of the toluene was finally decomposed into CO2.

Free Research Field

植物大気環境学