Health Research Registry List

Research Registry No : HRID-00134_V7
University Departmental Research :
Registration Date : 2019-05-17
Title of Research : Determination of heavy metal contents in rice varieties from Myaungmya, Labutta and Pyinsalu Townships, Ayeyarwady region
Principle Investigator : Phyo Wai zin
Co-authors : Phyo Wai Zin, Myo Nanda Aung, Khin Phyu Phyu, Mya Marlar, Tin Tin Han, Htain Lin Tun
Field of Research : Others
Publication Source :
Year of Publication : -
URL of Publication : -
Presentation Source : 47th Myanmar Health Research Congress. 2019; P98
Placement of Presentation : DMR
Year of Presentation : 2019
Abstract : Rice is the essential food in Myanmar. Rice can contain a certain amount of heavy metals. Heavy metals uptake by the plants is found to depend on the salinity of water used in their cultivation. The cross sectional study was aimed to determine the concentrations of ten heavy metals (Arsenic (As), Cobolt (Co), Cadmium (Cd), Lead (Pb), Cromium (Cr), Zinc (Zn), Copper (Cu), Nickel (Ni), Iron (Fe) and Manganese (Mn)) in rice varieties cultivated in freshwater exposed paddy fields from Myaungmya and Labutta, as well as in seawater exposed paddy fields from Pyinsalu Townships from Ayeyarwady region. It was conducted at Pain-Nae-Kone, Kyone-War, Aein-Mae and Kwel-Lwel villages of Myaungmya Township; Tha-Nat-Phat village of Labutta Township; and Pyinsalu village of Pyinsalu subtownship. The rice varieties included Shwe-War-Yin, Ma-Naw-Phyu, Ayeyar-Padaythar and Myo-Pwar from Myaungmya Township; Paw-San-Yin, Yay-Sin- Paw-San-Gyi and Nga-Kywel from Labutta Township; and Paw-San-Yin, Nga Sein and Khun War from Pyinsalu sub-township. It was determined by inductively coupled plasma - optical emission spectrometry (ICP-OES) (Perkin Elmer) Optima 8000. Among the toxic metals (As, Cd, Pb, Cr, Ni), As was detected above maximum allowable concentration (MAC) of 200 ng/g in one sample from Myaungmya (Ayeyar-Padaythar) which has 235.2±26.5 ng/g and two samples from Pyinsalu Township (Nga-Sein and Khun War) which have 216.3±8 ng/g and 290.1±57 ng/g respectively. Others toxic metals were detected below their respective MACs in all Townships. Among the micronutrients metals (Zn, Cu, Co, Fe, Mn), Co was detected above MAC of 10 ng/g in all samples except two from Labutta Township and two from Myaungmya Township. Fe was detected above MAC of 5 ug/g in two samples from Myaungmya which have 15.760.33 and 5.410.13 ug/g, and one sample from Pyinsalu Township which has 11.950.39 ug/g. Mn was detected above MAC of 5 ug/g in all samples except one from Pyin Sa Lu Township. Zn and Cu were detected below their respective MACs in all Townships. The study found out that there was no significant difference in distribution of heavy metals in rice varieties cultivated in fresh water and sea water exposed paddy fields.
IRB/PRC/ERC Approval Date : 2018-01-10
Placement of IRB/PRC/ERC : Department of Medical Research
IRB/PRC/ERC Approval Letter/Document : PRC rice.pdf
Pre-existing Registration ID : -
Pre-existing Name of Organization : -
Pre-existing Website : -