کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2588966 1561937 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The vertical distribution of house dust mite allergen in carpet and the effect of dry vacuum cleaning
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست بهداشت، سم شناسی و جهش زایی
پیش نمایش صفحه اول مقاله
The vertical distribution of house dust mite allergen in carpet and the effect of dry vacuum cleaning
چکیده انگلیسی

BackgroundCarpets are large reservoirs of the dust mite allergen Der p 1. The effect of vacuum cleaning on the distribution of Der p 1 in carpets is poorly understood.MethodsSamples were cut from 7 used household carpets, all over 5 years of age. From each carpet, 10 samples were left untreated, 10 vacuumed with an upright vacuum cleaner, and 10 vacuumed with a canister vacuum cleaner. Each section was then cut into 3 horizontal layers: the top 2 mm, the remainder of the carpet pile, and the carpet base. The mass of Der p 1 as a proportion of carpet volume was then determined.ResultsThe concentrations of Der p 1 in each depth layer varied considerably between the 7 untreated carpets. In the top layer, Der p 1 concentrations were (median; 25th–75th percentiles): 41.9; 28.3–92.6 pg/mm3. For the middle layer they were similar (38.1; 22.4–108.5 pg/mm3), and for the carpet base, higher (212.4; 98.8–456.2 pg/mm3).In most cases, cleaning using either type of vacuum cleaner resulted in no significant reduction in allergen concentration throughout all depth layers. A subset of carpets showed an apparent increase in Der p 1 concentration in one or more layers following vacuum cleaning. In all tests Der p 1 was collected in the vacuum cleaners’ filter bags.ConclusionsThe depth-distribution of Der p 1 differs widely amongst used carpets. Vacuum cleaning changes the distribution of Der p 1 within such carpets but does not necessarily result in a reduction in the overall content.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hygiene and Environmental Health - Volume 210, Issue 1, 13 February 2007, Pages 43–50
نویسندگان
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