tailieunhanh - Preliminary Results of PIXE Analysis of Mosses for Air Pollution Monitoring in Hanoi Using Pelletron Accelerator

This paper presents the preliminary results of using moss for analysis of heavy metals in the air in Hanoi by PIXE technique on Pelletron electrostatic accelerator of the VNU, University of Science (HUS). | VNU Journal of Science: Mathematics – Physics, Vol. 33, No. 2 (2017) 53-58 Preliminary Results of PIXE Analysis of Mosses for Air Pollution Monitoring in Hanoi Using Pelletron Accelerator Nguyen The Nghia1,*, Bui Thi Hoa1, Nguyen Thi Thom1, Le Hong Khiem2 1 VNU University of Science, 334 Nguyen Trai, Hanoi, Vietnam Institute of Physics, Vietnam Academy of Science and Technology 2 Received 17 April 2017 Revised 26 May 2017; Accepted 15 June 2017 Abstract: Air pollution is a major problem in many cities in Vietnam. The existence of heavy metals in dust particles in the air impacts negatively on human health. There are many different methods to collect dust in the air and analyse the heavy metals concentration. The method using mosses as a biological indicator for monitoring air pollution has been using widely around the world. This paper presents the preliminary results of using moss for analysis of heavy metals in the air in Hanoi by PIXE technique on Pelletron electrostatic accelerator of the VNU, University of Science (HUS). Keywords: Moss, Pelletron, PIXE, Accelerator, Air pollution. 1. Introduction Using biomonitor as air pollution indicators is emerging trend besides direct air analysis. This is especially when monitoring large areas [1]. The usefulness of moss in determining the concentrations of heavy metals in the air in different regions were discussed and demonstrated in several studies [2, 3]. Research-based pollution filter dust in the air is only in a short sampling period. Sampling in a large number of places and in long term by the technical equipments is very expensive. Biomonitoring is a cost effective and appropriate solution. Biomonitoring is defined as a method for assessing the several characteristics of the biosphere with the use of bio-organisms. Bioindicator or biological monitor [4] is used to call this organism. Biomonitor is organisms that provide quantitative information about the quality of environment [3, 5]. Therefore, this .