石柱黄连及根际土壤中矿质元素特征分析  

Analysis on Character of Mineral Elements in Shizhu Coptis Chinensis Franch.and Rhizosphere Soil

作　　者：曾婷婷 付婷婷[1,2] 黄永川 张伟[1,2] 杨晓霞 唐明凤[1,2] ZENG Tingting;FU Tingting;HUANG Yongchuan;ZHANG Wei;YANG Xiaoxia;TANG Mingfeng(Institute of Agricultural Quality Standard and Testing Technology,Chongqing Academy of Agricultural Sciences,Chongqing 401329,China;Risk Assessment Lab of Agri-Food Quality and Safety(Chongqing),Ministry of Agriculture and Rural Affairs,Chongqing 401329,China)

机构地区：[1]重庆市农业科学院农业质量标准与检测技术研究所,重庆401329 [2]农业农村部农产品质量安全风险评估实验室(重庆),重庆401329

出　　处：《中国无机分析化学》2022年第6期103-111,共9页Chinese Journal of Inorganic Analytical Chemistry

基　　金：重庆市自然科学基金(基础研究与前沿探索专项)面上项目(cstc2019jcyj-msxmX0503);重庆市农业科学院市级财政专项项目(NKY-2022AC016,NKY-2022AB023);重庆市农业发展资金项目(NKY-2021AB013);重庆市绩效激励引导专项项目(cstc2021jxjl20019)。

摘　　要：研究石柱黄连不同器官及其根际土壤中矿质元素特征,探究黄连根茎矿质元素间及其与土壤环境的相关性。采用电感耦合等离子体质谱法(ICP-MS)、电感耦合等离子体发射光谱法(ICP-OES)及原子荧光光谱法(AFS)测定了15组石柱黄连植株和根际土壤中18种矿质元素含量,所得数据运用SPSS 22.0统计软件分析。石柱黄连根际土壤中锰、磷、镁、镉、汞等元素含量的变异性较大,部分采样点土壤中镉含量超过农用地土壤污染风险筛选值。在检测的18种元素中,黄连植株中钙、镁、磷、钾含量最高,其次是铁、锰、锌,再次是锶、铜、镍,最后是铅、钒、钴、镉、钼、铬、砷、汞。须根对大部分矿质元素的富集能力强于根茎或地上部;黄连根茎对锌的富集能力强于须根或地上部;地上部对钙、磷、钾、铬的富集能力强于须根或根茎。Spearman分析表明黄连根茎矿质元素间、黄连根茎与土壤中矿质元素有一定相关性,部分具有统计学意义(P<0.05)。石柱黄连不同器官中矿质元素含量有明显差异,以此建立的指纹图谱可用于区分黄连根茎及须根的粉末样品;黄连根茎中矿质元素间主要表现为协同作用,黄连根茎与土壤中矿质元素既有协同作用又有拮抗作用。To find the content,distribution and bio-concentration character of mineral elements in Coptis Chinensis Franch.and its correlation with rhizosphere soil,the content of 18 mineral elements in 15 groups of herbs and soil were determined by inductively coupled plasma mass spectrometer(ICP-MS),inductively coupled plasma optical emission spectrometer(ICP-OES),and atomic fluorescence spectrometer(AFS)and then analyzed by SPSS 22.0 software.The contents of manganese,phosphorus,magnesium,cadmium,and mercury in the rhizosphere soil were found to be variable.The content of cadmium in some sampling sites exceeded the risk screening value for soil contamination of agricultural land in China.Among the minerals analyzed,the contents of Ca,Mg,P,and K in herbs were the highest,followed by Fe,Mn,and Zn,followed by Sr,Cu,and Ni,and finally Pb,V,Cd,Co,Mo,Cr,As and Hg.The zinc level in rhizomes was higher than that in fibrous roots or shoots.Most mineral elements had higher bio-concentration factor(BCF)values in rhizomes than in fibrous roots and shoots,whereas BCF values of calcium,phosphorus,potassium,and chromium were higher in fibrous roots than in other parts.Spearman analysis revealed that there was a certain correlation between mineral elements in rhizomes and between them in rhizomes and soil,and some of them were statistically significant(P<0.05).Mineral element contents among different parts of Coptis Chinensis Franch.had significant differences.Fingerprints were then established for distinguishing powder samples of rhizomes and fibrous roots.The majority of elements in the rhizomes had synergistic accumulation impacts.Mineral elements in the rhizomes and soil showed both synergistic and antagonistic effects.

关 键 词：土壤 无机元素 矿质元素 中药材 重金属 相关性分析 

分 类 号：O657.63[理学—分析化学] O657.31[理学—化学]