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Concentrations of total I and potentially plant available I (i.e. water soluble and organically bound iodine) were measured in 141 agricultural soil samples. For total I measurements, pressed powder pellets were prepared from soil samples and concentrations of I were measured by energy dispersive X-ray fluorescence. Potentially plant available I contents were measured by inductively coupled plasma mass spectrometry after soil samples had been extracted with tetramethyl ammonium hydroxide and their soluble and organically bound I concentrations had been measured (TMAH-extractable I). The results showed a high correlation between the total and TMAH-extractable I concentrations. The geometric means of total and TMAH-extractable I in the paddy field samples were 1.9 and 1.1 mg kg-1-dry, respectively, while those in the upland field soil samples were 5.7 and 4.2 mg kg-1-dry, respectively. For the agricultural soils having less than 5 mg kg-1 total I, it was estimated that the average concentrations of plant unavailable I in paddy fields and upland fields were 0.7+/-0.2 mg kg-1-dry and 0.7+/-0.4 mg kg-1-dry, respectively. The different total I concentrations for fields of the two agricultural uses could be explained by the differences in their redox conditions; I is mobile under reducing conditions so that it was removed from the paddy fields by leaching from the plowed layer or by I volatilization from the soil.", "subitem_description_type": "Abstract"}]}, "item_8_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "0361-5995", "subitem_source_identifier_type": "ISSN"}]}, "item_access_right": {"attribute_name": "アクセス権", "attribute_value_mlt": [{"subitem_access_right": "metadata only access", "subitem_access_right_uri": "http://purl.org/coar/access_right/c_14cb"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Tagami, Keiko"}], "nameIdentifiers": [{"nameIdentifier": "457061", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Uchida, Shigeo"}], "nameIdentifiers": [{"nameIdentifier": "457062", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Takeda, Akira"}], "nameIdentifiers": [{"nameIdentifier": "457063", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Yamasaki, Shin-ichi"}], "nameIdentifiers": [{"nameIdentifier": "457064", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "et.al"}], "nameIdentifiers": [{"nameIdentifier": "457065", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "田上 恵子", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "457066", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "内田 滋夫", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "457067", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "山崎 慎一", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "457068", "nameIdentifierScheme": "WEKO"}]}]}, "item_language": {"attribute_name": "言語", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_resource_type": {"attribute_name": "資源タイプ", "attribute_value_mlt": [{"resourcetype": "journal article", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "Estimation of plant unavailable iodine concentrations in agricultural fields", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Estimation of plant unavailable iodine concentrations in agricultural fields"}]}, "item_type_id": "8", "owner": "1", "path": ["1"], "permalink_uri": "https://repo.qst.go.jp/records/45942", "pubdate": {"attribute_name": "公開日", "attribute_value": "2010-11-11"}, "publish_date": "2010-11-11", "publish_status": "0", "recid": "45942", "relation": {}, "relation_version_is_last": true, "title": ["Estimation of plant unavailable iodine concentrations in agricultural fields"], "weko_shared_id": -1}
Estimation of plant unavailable iodine concentrations in agricultural fields
https://repo.qst.go.jp/records/45942
https://repo.qst.go.jp/records/459422f58ec81-4365-4495-81ea-5b64221c1afe
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2010-11-11 | |||||
タイトル | ||||||
タイトル | Estimation of plant unavailable iodine concentrations in agricultural fields | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Tagami, Keiko
× Tagami, Keiko× Uchida, Shigeo× Takeda, Akira× Yamasaki, Shin-ichi× et.al× 田上 恵子× 内田 滋夫× 山崎 慎一 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | In this study, a method for estimation of plant unavailable iodine (I) concentrations in soils was proposed. Concentrations of total I and potentially plant available I (i.e. water soluble and organically bound iodine) were measured in 141 agricultural soil samples. For total I measurements, pressed powder pellets were prepared from soil samples and concentrations of I were measured by energy dispersive X-ray fluorescence. Potentially plant available I contents were measured by inductively coupled plasma mass spectrometry after soil samples had been extracted with tetramethyl ammonium hydroxide and their soluble and organically bound I concentrations had been measured (TMAH-extractable I). The results showed a high correlation between the total and TMAH-extractable I concentrations. The geometric means of total and TMAH-extractable I in the paddy field samples were 1.9 and 1.1 mg kg-1-dry, respectively, while those in the upland field soil samples were 5.7 and 4.2 mg kg-1-dry, respectively. For the agricultural soils having less than 5 mg kg-1 total I, it was estimated that the average concentrations of plant unavailable I in paddy fields and upland fields were 0.7+/-0.2 mg kg-1-dry and 0.7+/-0.4 mg kg-1-dry, respectively. The different total I concentrations for fields of the two agricultural uses could be explained by the differences in their redox conditions; I is mobile under reducing conditions so that it was removed from the paddy fields by leaching from the plowed layer or by I volatilization from the soil. | |||||
書誌情報 |
Soil Science Society of America Journal 巻 74, 号 5, p. 1562-1567, 発行日 2010-09 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0361-5995 |