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An environmental assessment of mold concentrations and potential mycotoxin exposure in the greater southeast Texas area.

机译：德克萨斯州东南部地区霉菌浓度和潜在霉菌毒素暴露的环境评估。

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摘要

An assessment of indoor air quality in homes from the greater Houston and Southeast Texas area was sampled over a three-month period to ascertain the potential toxic exposure to molds and mycotoxins. In 2001 Houston experienced widespread flooding due to Tropical Storm Allison. The slow receding waters allowed molds to proliferate to great levels and affected many homes and businesses in and around the Houston area. Source (air) and surface (swab, tape and bulk) samples were taken in fungal contaminated residences to measure the amounts of airborne and surface contaminants. Indoor airborne counts of fungal spores that were identified to be 80% or more of the outside counts of similar fungal genera were classified as indoor air contaminants. This study identified species of Aspergillus, Penicillium and Cladosporium at levels ranging from 80% to 20 times greater than the corresponding outdoor readings in the greater Southeast Texas area. Aspergillus and Penicillium species are considered potentially toxic to humans at elevated levels due to their ability to produce mycotoxins. Cladosporium is considered non-pathogenic, but can still cause allergenic reactions from hyphal fragments. Surface sampling which is utilized for identification of visible mold contaminants, identified species of Aspergillus, Penicillium, Chaetomium, Cladosporium and Stachybotrys ranging from 1 to 100 total colony counts (1--100% for tape and bulk non-cultured assays) contingent upon the extent of visual contamination. The numerical values from surface sampling were used primarily to identify the degree of visual contamination, as well as, identify any molds that may have been too heavy to become aerosolized.
机译：在三个月的时间内对大休斯顿和德克萨斯州东南地区的房屋进行了室内空气质量评估，以确定霉菌和霉菌毒素的潜在毒性暴露。 2001年，由于热带风暴艾莉森（Allison），休斯敦经历了大范围的洪水泛滥。缓慢退去的水使霉菌扩散到很高的水平，并影响了休斯顿地区及其周围地区的许多家庭和企业。在真菌污染的住所中采集源（空气）和表面（棉签，胶带和散装）样品，以测量空气传播和表面污染物的量。室内空气中的真菌孢子计数被确定为相似真菌属的外部计数的80％或更多，被归类为室内空气污染物。这项研究确定了曲霉菌，青霉菌和枝孢菌的种类，其含量比大德克萨斯州东南部地区相应的室外读数高80％至20倍。由于曲霉菌和青霉菌产生霉菌毒素的能力，它们被认为对人类具有潜在的潜在毒性。 Cladosporium被认为是非致病性的，但仍会引起菌丝碎片的过敏反应。表面采样可用于识别可见的霉菌污染物，已鉴定的曲霉菌，青霉菌，漆皮虫，枝孢菌和水生真菌的种类，总菌落数范围为1至100（对于带和非人工培养法，其菌落数为1--100％），取决于视觉污染的程度。表面采样的数值主要用于识别视觉污染程度，以及识别可能太重而无法雾化的任何霉菌。

著录项

  • 作者

    Khan, Noreen N.;

  • 作者单位

    Texas Southern University.;

  • 授予单位 Texas Southern University.;
  • 学科 Chemistry Analytical.; Environmental Sciences.; Engineering Environmental.
  • 学位 Ph.D.
  • 年度 2003
  • 页码 201 p.
  • 总页数 201
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;环境科学基础理论;环境污染及其防治;
  • 关键词

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