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Use of cadmium isotopes to distinguish sources of cadmium in New Zealand agricultural soil: Preliminary results


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In New Zealand’s agricultural soils, phosphate fertiliser applications are the main source of cadmium (Cd). In 1997, the NZ fertiliser industry discontinued sourcing rock phosphate from Nauru (about 450 mg Cd/ Kg P) and began producing superphosphate from other rock phosphate sources (such as Morocco), which have generally lower concentrations of Cd. Research on the concentration of Cd in soils from the long-term irrigation trials at the Winchmore research farm (Canterbury) indicates that Cd accumulation rates have started to slow in the period since 1997 (Fig. 1) (McDowell 2012).

Item Type: Paper presented at a conference, workshop or other event, and published in the proceedings
Uncontrolled Keywords: cadmium isotopes, New Zealand, agricultural soil
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
S Agriculture > S Agriculture (General)
Divisions: Schools > Centre for Science and Primary Industries
Depositing User: Maddie Zadeh
Date Deposited: 18 Jan 2018 04:15
Last Modified: 21 Jul 2023 04:49

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