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Fresh fruit and vegetables can be analysed after method optimisation with an LOQ of 0,01 mg/kg, previously 0.05 mg/kg.
The parameter number is 72247 for phosphonic acid with an LOQ of 0,01 mg/kg in fresh fruit & vegetable samples.
For other matrices which contain fat, carbohydrates or proteins in significant concentrations the LOQ will remain at 0.05 mg/kg.
The method is still not suitable for pure veg. oils & fats, dried herbs, tea, coffee, plant powders, dried fruit, neither for milk, eggs and sugar rich products like jam.
Author: Frank Mörsberger
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