Diseases and parasites can seriously reduce the yield of agricultural crops and fruit and vegetables. In order to protect crops before and after the harvest, plant protection products containing pesticides are used. Normally these chemicals kill harmful insects, weeds and fungi. The risk to the health of the population correlated with the intake of plant protection products through food is a very timely and complex problem. The amount of residues found in food must be safe for consumers and be as low as possible. A maximum residue limit (MRL) is the highest level of a pesticide that is legally tolerated in food or feed. These limits are also valid for processed products considering dilution or concentration factors during processing operations.
Thanks to the Multimethod approach it is possible to determine the pesticides considered critical for each crop.
These critical issues were determined based on the positivities identified for each crop in the last 24 months, on the alerts and reports received from sector operators.
The multimethod proposal can be modulated on several levels of investigation; the first level is characterized by the molecules considered critical determinable with the QuEChERS approach. These molecules are added to those molecules co-determinable at no additional costs.
During the successive analytical levels, other groups and other molecules considered “critical” but not determinable with QuEChERS approach are added.
Each molecule within our multimethod proposals is determined in accordance with the applicable EU legislation, with a LOQ of 0.01mg / kg (or lower if required by the legislation – Ex: carbofuran) in the case of fresh products or 0.05mg / kg in the case of concentrated / dried products.
The determinations of Fosetyl Al and Dithiocarbamates as nonspecific determinations are excluded from the Multimethod proposal. If you are interested in these determinations, please request them separately.
In addition to multimethods on products of plant origin, specific multimethods were developed for products of animal origin following the same criterion.
Analysis of residues on Babyfood
In case of products in the field of application of the Directives 125/2006 and 142/2006 it is possible to request the specific integration to the analytical proposal. This extension determines the substances for which the maximum applicable limit is not 0.01mg / kg but 0.03mg / kg.
Analysis of residues on products for animal feed
The Reg 396/2005 does not define maximum limits for products elaborated specifically for feed use. In order to perform the analyzes required by current legislation, it is advisable to inform the laboratory of the nature of the sample subjected of analysis, when requesting an offer. In fact, if it is a product that by its nature can be used for human or animal feed, it is necessary to apply the same profile used for products intended for human consumption.
Determination of Fosetyl Al in biological products
Waiting for a deeper definition of the approach by the control units in the field of organic production, Neotron suggests requesting the determination of Fosetyl Al with low limit technique (LOQ 0.01mg / kg for phosphonic acid).
Latest studies seem infact to show that phosphorous acid residues are not due to the presence of phosphites in foliar fertilizers, but to the use of phosphites (or, in some cases of Fosetyl Al) not listed in the product specifications, but which instead are authorized in organic farming.
This information was deepened during the 2018 seminar on Risk Assessment in the Food Supply Chain organized by Neotron.
Single or multiresidue methods, employ the best and most advanced equipment in order to guarantee the highest reliability and low limits of quantification.