Disculpen Vds. el título que no tiene otro objetivo mas que el de ser deliberadamente amarillista y llamar su atención sobre la presencia de Nitrosaminas y ácaros en el polvo de casa.
Sobre los minúsculos animales responsabes de muchos procesos pulmonares hoy no toca hablar, dejándolo para mejor ocasión en la que comentemos algo sobre las reaccionesde hipersensibilidad pulmonar mediadas por éstos animalitos/ vectores.
Rescatamos esl articulos sobre nitrosaminas ( unas sustancias que generan cánceres en el epitelio de diferentes órganos: vejiga y estómago), por ejemplo.
Nitrosamines in house dustMore than 60 organo-nitrogen compounds were detected in the chromatograms and were identified from their retention times. The excellent resolution afforded by the combination of the two columns ensured very little overlap with only two compounds, N-nitrosopyrrolidine and N-nitrosomorpholine, quantified together due to their similar retention times.
All 15 target compounds were detected in some of the dust samples. The total average levels of the compounds in dust from smoking homes were about three-fold higher than those from non-smoking homes at 26.3 and 9.6 µg/g, respectively.
Nicotine was the most abundant compound by far in smoking home dust and one of the more abundant in non-smoker dust, where the major compound was N-nitrosodiphenylamine. Other abundant volatile nitrosamines were N-nitrosomethylethylamine and N-nitrosodiethylamine.
Of the TSNAs, NNK and N'-nitrosoanatabine were the most abundant. The NNK degradation product 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol was observed in three non-smoking dust samples and did not correlate with the NNK levels.
The distributions of the nitrosamines could easily be affected by the factors such as the influx of outdoor pollution or by the presence of smoking visitors to non-smoking households, so the absolute values must be regarded with caution.
Nevertheless, the novel GC x GC method with nitrogen chemiluminescence detection will allow more detailed studies to be undertaken so that indoor exposure to the carcinogenic nitrosamines from dust can be assessed .