Hegarty J M, Rouhbakhsh S, Warner J A, Warner J O
University of Southampton, Southampton General Hospital, U.K.
Respir Med. 1995 Apr;89(4):279-84. doi: 10.1016/0954-6111(95)90088-8.
The efficiency (dust collection and recirculation) of a conventional upright vacuum cleaner with a prototype vacuum bag (I) with pore size of 0.1 micron was compared with a standard vacuum cleaner bag (II), in the homes of 11 atopic asthmatic subjects with a known allergy to house dust mite. Four filter vacuum cleaners were assessed in pairs-the Vax 2000 with the Vorwerk VK121 ET340 (in 10 homes), and the Nilfisk GS90 'Allergy Vac' with the Bosch maxima 43 (in nine homes). All of the selected homes were vacuumed throughout (carpets and soft furnishings) for a 15 min period with each of the cleaners, and air was sampled simultaneously at 21 min-1 (Casella personal sampler). The weight of dust retrieved was recorded, and a sample of sieved dust (2 g) and the air filters were extracted to determine the concentrations of the major allergen, Der pI, by ELISA (ALK). No significant difference was observed in either total weight of dust, or airborne and dust concentrations of Der pI between using the conventional cleaner with vacuum bags I, or vacuum bags II. The Vax and the Vorwerk filter vacuum cleaners produced no measurable airborne Der pI concentrations during use in any of the 10 homes tested, whilst the Nilfisk produced airborne Der pI in two, and the Bosch in one of the nine homes tested. The Vorwerk retrieved significantly more dust from the floors than the Vax (P < 0.002). There was no significant difference in dust retrieval between the Nilfisk and the Bosch. All of the filter vacuum cleaners investigated produced lower concentrations of airborne Der pI, compared to the conventional cleaner with or without a special dust bag. However, the amount of dust and concentration/amount of Der pI that these cleaners actually retrieved, varied and the Vorwerk appeared most effective overall.
在11名已知对屋尘螨过敏的特应性哮喘患者家中，将配备孔径为0.1微米的原型真空袋（I）的传统直立式真空吸尘器的效率（集尘和再循环）与标准真空吸尘器袋（II）进行了比较。对四台过滤式真空吸尘器进行了配对评估——Vax 2000与福维克VK121 ET340（在10户家庭中），以及力奇GS90“过敏吸尘器”与博世maxima 43（在9户家庭中）。所有选定的家庭都用每台吸尘器对整个房屋（地毯和软装）进行了15分钟的吸尘，同时在21分钟时采集空气样本（卡塞拉个人采样器）。记录回收的灰尘重量，并提取2克筛分灰尘样本和空气过滤器，通过酶联免疫吸附测定法（ALK）测定主要过敏原Der pI的浓度。使用配备真空袋I的传统吸尘器或真空袋II时，在灰尘总重量、Der pI的空气传播浓度和灰尘浓度方面均未观察到显著差异。在测试的10户家庭中，Vax和福维克过滤式真空吸尘器在使用过程中均未产生可测量的空气传播Der pI浓度，而力奇在测试的9户家庭中有两户产生了空气传播Der pI，博世在其中一户产生了空气传播Der pI。福维克从地板上回收的灰尘明显多于Vax（P<0.002）。力奇和博世在灰尘回收方面没有显著差异。与配备或不配备特殊集尘袋的传统吸尘器相比，所有研究的过滤式真空吸尘器产生的空气传播Der pI浓度都较低。然而，这些吸尘器实际回收的灰尘量以及Der pI的浓度/量各不相同，总体上福维克似乎最有效。
