Martha Johnson, Mehmet Ates, Zikri Arslan, Ibrahim Farah, Coneliu Bogatu
{"title":"晶体形态对纳米二氧化钛对盐卤虫的吸收、颗粒溶解和毒性的评估。","authors":"Martha Johnson, Mehmet Ates, Zikri Arslan, Ibrahim Farah, Coneliu Bogatu","doi":"10.4018/JNN.2017010102","DOIUrl":null,"url":null,"abstract":"<p><p>Knowledge of nanomaterial toxicity is critical to avoid adverse effects on human and environment health. In this study, the influences of crystal morphology on physico-chemical and toxic properties of nanoscale TiO<sub>2</sub> (<i>n</i>-TiO<sub>2</sub>) were investigated. <i>Artemia salina</i> were exposed to anatase, rutile and mixture polymorphs of <i>n</i>-TiO<sub>2</sub> in seawater. Short-term (24 h) and long-term (96 h) exposures were conducted in 1, 10 and 100 mg/L suspensions of <i>n</i>-TiO<sub>2</sub> in the presence and absence of food. Anatase form had highest accumulation followed by mixture and rutile. Presence of food greatly reduced accumulation. <i>n</i>-TiO<sub>2</sub> dissolution was not significant in seawater (p<0.05) nor was influenced from crystal structure. Highest toxic effects occurred in 96h exposure in the order of anatase > mixture > rutile. Mortality and oxidative stress levels increased with increasing <i>n</i>-TiO<sub>2</sub> concentration and exposure time (p<0.05). Presence of food in the exposure medium alleviated the oxidative stress, indicating that deprivation from food could promote toxic effects of <i>n</i>-TiO<sub>2</sub> under long-term exposure.</p>","PeriodicalId":92250,"journal":{"name":"Journal of nanotoxicology and nanomedicine","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4018/JNN.2017010102","citationCount":"10","resultStr":"{\"title\":\"Assessment of Crystal Morphology on Uptake, Particle Dissolution, and Toxicity of Nanoscale Titanium Dioxide on <i>Artemia salina</i>.\",\"authors\":\"Martha Johnson, Mehmet Ates, Zikri Arslan, Ibrahim Farah, Coneliu Bogatu\",\"doi\":\"10.4018/JNN.2017010102\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Knowledge of nanomaterial toxicity is critical to avoid adverse effects on human and environment health. In this study, the influences of crystal morphology on physico-chemical and toxic properties of nanoscale TiO<sub>2</sub> (<i>n</i>-TiO<sub>2</sub>) were investigated. <i>Artemia salina</i> were exposed to anatase, rutile and mixture polymorphs of <i>n</i>-TiO<sub>2</sub> in seawater. Short-term (24 h) and long-term (96 h) exposures were conducted in 1, 10 and 100 mg/L suspensions of <i>n</i>-TiO<sub>2</sub> in the presence and absence of food. Anatase form had highest accumulation followed by mixture and rutile. Presence of food greatly reduced accumulation. <i>n</i>-TiO<sub>2</sub> dissolution was not significant in seawater (p<0.05) nor was influenced from crystal structure. Highest toxic effects occurred in 96h exposure in the order of anatase > mixture > rutile. Mortality and oxidative stress levels increased with increasing <i>n</i>-TiO<sub>2</sub> concentration and exposure time (p<0.05). Presence of food in the exposure medium alleviated the oxidative stress, indicating that deprivation from food could promote toxic effects of <i>n</i>-TiO<sub>2</sub> under long-term exposure.</p>\",\"PeriodicalId\":92250,\"journal\":{\"name\":\"Journal of nanotoxicology and nanomedicine\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2017-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.4018/JNN.2017010102\",\"citationCount\":\"10\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of nanotoxicology and nanomedicine\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.4018/JNN.2017010102\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of nanotoxicology and nanomedicine","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4018/JNN.2017010102","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Assessment of Crystal Morphology on Uptake, Particle Dissolution, and Toxicity of Nanoscale Titanium Dioxide on Artemia salina.
Knowledge of nanomaterial toxicity is critical to avoid adverse effects on human and environment health. In this study, the influences of crystal morphology on physico-chemical and toxic properties of nanoscale TiO2 (n-TiO2) were investigated. Artemia salina were exposed to anatase, rutile and mixture polymorphs of n-TiO2 in seawater. Short-term (24 h) and long-term (96 h) exposures were conducted in 1, 10 and 100 mg/L suspensions of n-TiO2 in the presence and absence of food. Anatase form had highest accumulation followed by mixture and rutile. Presence of food greatly reduced accumulation. n-TiO2 dissolution was not significant in seawater (p<0.05) nor was influenced from crystal structure. Highest toxic effects occurred in 96h exposure in the order of anatase > mixture > rutile. Mortality and oxidative stress levels increased with increasing n-TiO2 concentration and exposure time (p<0.05). Presence of food in the exposure medium alleviated the oxidative stress, indicating that deprivation from food could promote toxic effects of n-TiO2 under long-term exposure.