Presentation Title

The Analysis of Mercury Concentrations is Various Kinds of Rice

Faculty Mentor

Simone Aloisio

Start Date

17-11-2018 12:30 PM

End Date

17-11-2018 2:30 PM

Location

CREVELING 11

Session

POSTER 2

Type of Presentation

Poster

Subject Area

physical_mathematical_sciences

Abstract

Mercury(Hg) is a toxic heavy metal pollutant found worldwide. Climate change is expected to increase concentrations of Hg over the next several decades. Methylmercury(MeHgX), the organic form of mercury, is a common form of mercury found in nature. MeHgX binds to Rice during its growth process and has been found in relatively high concentrations. Rice is also a dominant staple crop for more than half of the world’s population meaning this could be a significant source of Hg for humans. Thermal decomposition, amalgamation and atomic spectroscopy were used to measure the concentration of Hg in various types of rice. Seven different types of rice were compared. The average concentrations of Hg found in the rice grains that were studied are: white short grain 6.9 ± 3.5 ppb, brown short grain 9.4 ± 2.6 ppb, brown short grain organic 9.2 ± 3.3 ppb, white jasmine rice 5.4 ± 3.4 ppb, brown jasmine rice 2.8 ± 1.4 ppb, brown long grain rice 12.5 ± 1.3 ppb, and brown long rice organic 8.2 ± 4.1 ppb.At these concentration levels, we show that rice can be a significant source of mercury. The implications of this work will be further discussed.

Summary of research results to be presented

The average concentrations of Hg found in the rice grains that were studied are: white short grain 6.9 ± 3.5 ppb, brown short grain 9.4 ± 2.6 ppb, brown short grain organic 9.2 ± 3.3 ppb, white jasmine rice 5.4 ± 3.4 ppb, brown jasmine rice 2.8 ± 1.4 ppb, brown long grain rice 12.5 ± 1.3 ppb, and brown long rice organic 8.2 ± 4.1 ppb.At these concentration levels, we show that rice can be a significant source of mercury.

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Nov 17th, 12:30 PM Nov 17th, 2:30 PM

The Analysis of Mercury Concentrations is Various Kinds of Rice

CREVELING 11

Mercury(Hg) is a toxic heavy metal pollutant found worldwide. Climate change is expected to increase concentrations of Hg over the next several decades. Methylmercury(MeHgX), the organic form of mercury, is a common form of mercury found in nature. MeHgX binds to Rice during its growth process and has been found in relatively high concentrations. Rice is also a dominant staple crop for more than half of the world’s population meaning this could be a significant source of Hg for humans. Thermal decomposition, amalgamation and atomic spectroscopy were used to measure the concentration of Hg in various types of rice. Seven different types of rice were compared. The average concentrations of Hg found in the rice grains that were studied are: white short grain 6.9 ± 3.5 ppb, brown short grain 9.4 ± 2.6 ppb, brown short grain organic 9.2 ± 3.3 ppb, white jasmine rice 5.4 ± 3.4 ppb, brown jasmine rice 2.8 ± 1.4 ppb, brown long grain rice 12.5 ± 1.3 ppb, and brown long rice organic 8.2 ± 4.1 ppb.At these concentration levels, we show that rice can be a significant source of mercury. The implications of this work will be further discussed.