Isotopic Studies of Sulfur Cycle in the Earth's Uppermost Spheres.

地球最上层球体硫循环的同位素研究。

• 批准号: 01460064
• 负责人: SASAKI Akira
• 金额: $ 2.88万
• 依托单位: Faculty of Education, Ibaraki University.
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-01460064/
• 关键词: Sulfur isotopes; Sedimentary sulfur; Bacterial reduction; Upper crust sulfur; Nail sulfur; Human biosulfur; Food sulfur; Coal sulfur; 硫黄同位体比; 泥炭; 土壌硫黄; 淡水; 植生の硫黄; 生起源亮硫化物; 潮間帯堆積物; 石炭硫黄同位体比; 食品硫黄同位体比; 爪硫黄同位体比; 生起源硫化物; 爪

On the basis of isotopic studies, sulfur in the Mesozoic Yamizo Group in the Kasama-Keisoku area, eastern Japan can be considered typical for the biogenic sulfides deposited from the Triassic to the early Cretaceous seas. There is also evidence that these sedimentary sulfides were the souces for the Cretaceous to Paleogene granitoids and related mineralizations in the nearby areas.The biosphere is one of the important sulfur reservoirs in the earth's uppermost spheres. Delta ^<34>S values of human nail samples range from +2 to +14 * among 75 individuals from 17 countries. People from the northern hemisphere are generally characterized by the light Values, while those from the equatorial areas and the southern hemisphere tend to show the heavier values. The isotopic level of human biosulfur is closely related with the organic sulfur in foods. Sulfur in seafoods comes from the sea-water sulfate and those of meat, cereals and vegetables are all supplied from the soil. Among sources for the soil sulfur anthropogenic sulfurs seem to be important these days, especially in countries of the northern hemisphere.The first systematic survey of the isotopic composition of Japanese coal sulfur has been made. Fifty-four samples from 20 coal fields and coal-bearing strata with the ages ranging from Permian to Pleistocene return delta ^<34>S value of -10 to +38%. The average value, +11.7, for the "low-sulfur"coal is found to be clearly heavier than the value known for the continental coal fields, that is around 48 %. Contibution of sea sulfur in the peat forming basin may have been the cause for the heavy low-sulfur coal from Japan.

根据同位素研究，日本东部Kasama-Keisoku地区的中生代Yamizo群中的硫可以被认为是从三叠纪到早期白垩纪早期沉积的生物硫化物的典型特征。也有证据表明，这些沉积硫化物是白垩纪至古近纪及其附近地区的相关矿化的象征。生物圈是地球上层最重要的硫磺储层之一。在来自17个国家 /地区的75个人中，人类指甲样品的delta ^<34> s值范围从+2到+14 *。来自北半球的人通常以光值为特征，而赤道区域和南半球的人倾向于显示较重的值。人类生物硫的同位素水平与食物中的有机硫密切相关。海鲜中的硫来自硫酸盐，肉类，谷物和蔬菜的硫均来自土壤。如今，土壤硫的人为硫的源似乎很重要，尤其是在北半球的国家中。已经对日本煤炭的同位素组成进行了首次系统调查。来自20个煤田和煤炭地层的54个样品，年龄从二叠纪到更新世返回delta ^<34> s值为-10至 +38％。发现“低硫”煤的平均值+11.7显然比大陆煤田所知道的值重，约为48％。泥炭形成盆地中海硫的连变可能是日本大量低硫煤的原因。

项目成果

佐々木 昭: "爪に火をもすー人体の硫黄同位体学事始めー" 地質ニュ-ス. 444. 8-16 (1991)

Akira Sasaki：“燃烧你的指甲：人体硫同位素科学的开端”地质新闻 444. 8-16 (1991)。

SAKAKI, A.: "Isotopic Composition of Human Fingernails." Bull, Fac, Educ., Ibaraki Univ. (Nat. Sci.). No. 39. 9-18 (1990)

SAKAKI, A.：“人类指甲的同位素组成。”

田澤 孝一: "八溝層群堆積岩の硫黄同位体比ー上部地穀の硫黄の循環に関する一考察ー" 茨城大学教育学部紀要(自然科学). 40. 7-21 (1991)

田泽晃一：“Yamizo群沉积岩的硫同位素比-上层颗粒中硫循环的研究”茨城大学教育学部通报（自然科学）40. 7-21（1991）。

MAKINO, Y., TAZAWA, K. and SASAKI, A.: "Quaternary Peat-bearing Clay Deposits in the Mashiko Area, Tochigi Prefecture." Bull. Fac. Educ., Ibaraki Univ. (Mat. Sci.). No. 41. (1992)

MAKINO, Y.、TAZAWA, K. 和 SASAKI, A.：“栃木县益子地区第四纪泥炭粘土矿床”。

蟻川 芳子: "二次イオン質量分析による環境生体試料中の硫黄同位体比測定" 日本化学会誌. 1991. 399-403 (1991)

Yoshiko Arikawa：“通过二次离子质谱法测量环境生物样品中的硫同位素比率”，日本化学会杂志 1991 年。 399-403 (1991)。