Monitoreo de cadmio y plomo en los principales fungicidas cúpricos comercializados en Mendoza, Argentina
Fungicide application has had a significant increase in recent agricultural periods, with copper fungicides being the most widely used in Mendoza. According to ISCAMEN (Instituto Sanidad y Calidad Agropecuaria Mendoza), 2,500 tons of these fungicides (44.80 % sulfate copper, 54.24% copper oxyc...
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| Publicado en: | Revista de la Facultad de Ciencias Agrarias |
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| Autores principales: | , , , , , |
| Materias: | |
| Acceso en línea: | https://bdigital.uncu.edu.ar/fichas.php?idobjeto=3185 |
| Sumario: | Fungicide application has had a significant
increase in recent agricultural periods,
with copper fungicides being the most widely
used in Mendoza. According to ISCAMEN
(Instituto Sanidad y Calidad Agropecuaria
Mendoza), 2,500 tons of these fungicides
(44.80 % sulfate copper, 54.24% copper oxychloride,
and 0.96% copper hydroxide were
applied in the 2004 - 2005 period and similar
amounts have been used subsequently.
Having detected heavy metals in these
products, our aim is to determine the values
present in most commercial brands available
in Mendoza.
To this effect, 53 samples of commercial
copper fungicides were collected (44 sulphate,
and 9 copper oxychloride), which are representative
of most brands.
Lead and cadmium amounts were determined
on acid extracts by atomic absorption
spectophotometry, in contrast to highly reliable
reference material.
Argentine legislation sets limits for
lead contents only. This value cannot exceed
the number resulting from the formula
Limit Pb mg.kg-1 = 5 x (% Cu product). For
phosgene the limit value is 275 mg.kg-1 and
for sulfate 125 mg.kg-1.
The statistically analyzed data yielded the
following results: for oxychloride, the average
was 207.17 mg.kg-1, with 33% of the samples
exeeding allowed lead values; for sulfate the
average was 63.06 mg.kg-1, with no samples
exceeding the limit.
The presence of cadmium was represented
by averages of 2.64 mg.kg-1 and
1.53 mg.kg-1 for oxichloride and copper
sulfate respectively.
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