多元统计法分析镉在土壤基质灰褐牛肝菌系统中迁移的影响因素

引用本文: 肖俊江, 李鹏程, 庄永亮, 孙丽平, 孙云. 多元统计法分析镉在土壤基质灰褐牛肝菌系统中迁移的影响因素[J]. 分析化学, 2021, 49(2): 301-308. doi: 10.19756/j.issn.0253-3820.201292 shu

Citation: XIAO Jun-Jiang, LI Peng-Cheng, ZHUANG Yong-Liang, SUN Li-Ping, SUN Yun. Multivariate Statistics for Investigation of Factors Affecting Migrating of Cadmium from Soil Matrix to Boletus Griseus[J]. Chinese Journal of Analytical Chemistry, 2021, 49(2): 301-308. doi: 10.19756/j.issn.0253-3820.201292 shu

多元统计法分析镉在土壤基质灰褐牛肝菌系统中迁移的影响因素

昆明理工大学农业与食品学院, 昆明 650500

通讯作者: 孙丽平,E-mail:sunyun88@163.com; 孙云,E-mail:lpsun@kmust.edu.cn

基金项目:
国家自然科学基金项目（Nos.21767014，3186021）资助。

摘要: 灰褐牛肝菌（Boletus griseus）是可食用野生大型真菌，对土壤基质中的镉（Cd）有富集作用。为了探究Cd在土壤基质B.griseus系统中迁移的影响因素，本研究采集了云南省22个B.griseus样本及其对应的生长土壤基质，测定了菌体和土壤中总Cd含量及赋存形态、土壤基质的理化特性和矿物质元素含量水平，采用主成分双标图分析和回归分析探讨了土壤基质的理化特性对Cd迁移的影响。结果表明，22个B.griseus样本Cd含量为8.69~24.19 mg/kg（干重），其中，水溶态占比最高，具有潜在的食品安全风险。土壤基质中总Cd含量水平为0.03~0.57 mg/kg（干重），以Fe-Mn氧化物结合态和离子交换态为主要赋存形态。菌体对土壤基质中Cd的生物富集系数为24.14~386.00，表明B.griseus对Cd具有很强的生物富集能力。基于主成分双标图，菌体Cd含量与土壤基质的Cd含量、电导率（EC）、总碳（TC）、总氮（TN）等因素正相关，与土壤pH值和溶解性有机碳（DOC）负相关。多元回归分析方程Cd_mushroom=42.196+3.945Cd_soil+0.214EC+1.658TC+0.326TN-5.432pH-0.526Clay-0.364TDS（R=0.793，P=0.025）定量表征了部分因素对Cd迁移的影响强度。

关键词:

English

Multivariate Statistics for Investigation of Factors Affecting Migrating of Cadmium from Soil Matrix to Boletus Griseus

Institute of Agriculture and Food, Kunming University of Science and Technology, Kunming 650500, China

Corresponding author: SUN Li-Ping, ; SUN Yun,

Received Date: 21 May 2020
Revised Date: 18 December 2020
Fund Project:
Supported by the National Natural Science Foundation of China (Nos.21767014, 3186021).

Abstract: Boletus griseus (B.griseus) is one of wild edible Boletaceae mushrooms in Yunnan province. B.griseus shows a strong bioaccumulation for Cd. This work aimed to elucidate the factors affecting the Cd migration from soil matrix to mushroom, to explore the bioconcentration mechanisms of B.griseus for Cd. A total of 22 samples of fresh B.griseus and colonied soil were collected, and the total Cd contents and the Cd occurrence in fruiting bodies and soil matrix were determined. And the physical and chemical properties of soil matrix were analyzed. The results showed that the total Cd contents of 22 mushrooms samples were 8.69- 24.19 mg/kg DW, and the water soluble Cd made up the highest proportion, exhibiting potential food safety risks. Total Cd contents in soil matrix were 0.03-0.57 mg/kg DW and the Fe-Mn oxides and exchangeable speciation were key constituents for Cd. Bioconcentration factors of B.griseus for Cd were 24.14-386.00. Principal component analysis elucidated that Cd content in soil, electrical conductivity (EC), total carbon (TC), total nitrogen (TN), pH and dissolved organic carbon (DOC) were the factors affecting the Cd accumulation by B.griseus. Multiple regression analysis calculated the infection of the factors quantitatively, being Cd_mushroom=3.945Cdsoil+0.214EC+1.658TC+0.326TN-5.432pH-0.526Clay-0.364TDS+42.196 (R=0.793, P=0.025).

Key words:

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多元统计法分析镉在土壤基质灰褐牛肝菌系统中迁移的影响因素

通讯作者: 孙丽平,E-mail:sunyun88@163.com; 孙云,E-mail:lpsun@kmust.edu.cn

English

Multivariate Statistics for Investigation of Factors Affecting Migrating of Cadmium from Soil Matrix to Boletus Griseus

Corresponding author: SUN Li-Ping, ; SUN Yun,

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

多元统计法分析镉在土壤基质灰褐牛肝菌系统中迁移的影响因素

通讯作者: 孙丽平,E-mail:sunyun88@163.com; 孙云,E-mail:lpsun@kmust.edu.cn

English

Multivariate Statistics for Investigation of Factors Affecting Migrating of Cadmium from Soil Matrix to Boletus Griseus

Corresponding author: SUN Li-Ping, ; SUN Yun,

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

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