The Mass Spectrometry society of Japan - The 68th Annual Conference on Mass Spectrometry, Japan
Japanese

Abstract

Table of contents

Timetable

Plenary Lectures

Award Lecture

Oral Sessions (Day1, Day2, Day3)

Poster Presentations (Day1, Day2, Day3)

Panel Discussion

Luncheon Seminars (Day1, Day2, Day3)

Corporate Program

Poster Presentations

Day 2, June 23（Thu.）　　Room P (501, 502 and 503)

2P-08　　PDF

Mercury Concentration in Kelp and a potential application for bio-monitoring of the ocean environment

(1Kwansei Gakuin Univ., 2Nagoya Univ.)
Kango Fukuyama1, oMasaharu Tanimizu1, Akane Ito1, Masayo Minami2

In this study, mercury (Hg) concentration of a kelp cultured in northern Hokkaido was determined along its growth line to evaluate whether the concentration of total Hg contained in the kelp reflects Hg concentration in seawater. Resultant Hg concentrations in three samples were around 20 ppb, and its enrichment factor against seawater was calculated to be around 20,000. Isotope ratios of 15N/14N measured along their growth line as well as Hg concentrations indicated that the growth rate-dependent vital dilution effect was small. As the secondary Hg exchange interaction with seawater after growth is small, the Hg concentration in kelp will reflect their surrounding environment at the time of growth, and its high Hg enrichment factor can be useful for bio-monitoring of the surface marine environment.