Trace Rare Earth Element Detection in Food and Agricultural Products Based on Flow Injection Walnut Shell Packed Microcolumn Preconcentration Coupled with Inductively Coupled Plasma Mass Spectrometry

Συγγραφείς:
Li, Yan
Yang, Jia-lin
Jiang, Yan
Τύπος: Journal Article
'Ετος δημοσίευσης: 2012
Πηγή: USDA
Συλλογή από: AGRIS
Θέμα:
agricultural products
products
agriculture
Περιγραφή:With the extensive use of rare earth elements (REEs) in agriculture as fertilizer and feed additives, the concentration of REEs has increased in environmental and biological samples and finally impaired human health by food chain accumulation. The determination of trace REEs has gained considerable importance because of their toxicity and increasing occurrence. In this work, walnut shell has been used as the green adsorbent in online preconcentration and detection of REEs in food and agricultural products coupled with inductively coupled plasma mass spectrometry (ICP-MS). Because of the porous surface and abundant -COO- groups on the walnut shell surface, the walnut shell-packed microcolumn provides high adsorption efficiency and high tolerable capacity for coexisting ions. Under the optimized conditions, the adsorption efficiency of the walnut shell packed microcolumn was as high as 98.9% for 15 REEs, and the tolerable concentration ratios were between 2000 and 80 000 000 for 37 kinds of coexisting interfering ions. The enhancement factors achieved were 79-102 for 15 REEs with a sample loading volume of 4.7 mL. The detection limits were in the range of 2-34 pg g-1. The relative standard deviation for 11 replicate preconcentrations of 2.5 ng L-1 REEs solution ranged from 0.5 to 2.0%. The present method was successfully applied to selective determination of REEs in 4 environmental and biological certified reference materials and 18 locally collected food and agricultural products.
 

Σχετικοί Πόροι

Risk Analysis for Off-season Greenhouse Tomato Production

Provider: 
Subject: 
products
agricultural products
plant products
socioeconomic development
agricultural development
economics
agricultural economics
agriculture
agricultural practices

An economic analysis of soilless culture in gerbera production

Provider: 
Subject: 
products
agricultural products
plant products
agriculture
agricultural practices

Innovation implementation strategies for consumer driven fruit supply chains

Provider: 
Subject: 
products
agricultural products
socioeconomic development
rural development
agricultural development
economics
agricultural economics
trade
agriculture
agricultural practices

Understanding how farmers last over the long term: a typology of trajectories of change in farming systems. A French case-study

Provider: 
Subject: 
agricultural products
products
farms
agriculture
farmers
farming systems
Collected from: 

A report on the efficient way to take into account the consumer WTP in order to improve the European regulation of pesticides for fresh and processed agricultural products

Provider: 
Subject: 
policies
products
agriculture
agricultural products
Collected from: 

Best horticultural practices for greenhouse production in the Middle East

Provider: 
Subject: 
agricultural practices
agricultural products
products
sustainable agriculture
agriculture
Collected from: 

AGRERI Library

Risk Analysis for Off-season Greenhouse Tomato Production

Provider: 
Subject: 
products
agricultural products
plant products
socioeconomic development
agricultural development
economics
agricultural economics
agriculture
agricultural practices

An economic analysis of soilless culture in gerbera production

Provider: 
Subject: 
products
agricultural products
plant products
agriculture
agricultural practices

Innovation implementation strategies for consumer driven fruit supply chains

Provider: 
Subject: 
products
agricultural products
socioeconomic development
rural development
agricultural development
economics
agricultural economics
trade
agriculture
agricultural practices

External Library

Understanding how farmers last over the long term: a typology of trajectories of change in farming systems. A French case-study

Provider: 
Subject: 
agricultural products
products
farms
agriculture
farmers
farming systems
Collected from: 

A report on the efficient way to take into account the consumer WTP in order to improve the European regulation of pesticides for fresh and processed agricultural products

Provider: 
Subject: 
policies
products
agriculture
agricultural products
Collected from: 

Best horticultural practices for greenhouse production in the Middle East

Provider: 
Subject: 
agricultural practices
agricultural products
products
sustainable agriculture
agriculture
Collected from: