Background Museums of Natural History serve community and science by paying serious attention to understanding biodiversity. Recently Dutch entomological collection from different institutes have been combined into one main collection. The collection preservation was based on moth-balls (naphthalene). Aim To establish risks for the occupational health of working with the entomological collection before and after moving and impriving the indoor air quality. Methods The indoor air quality of the old and new storage room was evaluated by analyzing air samples and measuring the ventilation rates. TenaxGR was used for the adsorption of VOCs and DNPH cartridges were used for the adsorption of volatile carbonyls. Additionally the wooden cabinets were subjected to a climate chamber emission test. Results The old repository contained over 800 cabinets with 10 drawers each (filled with 5-6 moth-balls). The highest concentration observed of naphthalene and formaldehyde indoor were subsequently 9300 and 169 μg/m3. The formaldehyde concentration exceeded the Dutch threshold limit value of 150 μg/m3. Chamber emission tests on the wooden cabinets indicated that they emit mainly formaldehyde. All moth-balls were removed and the collection was moved. Although the repository had air purification naphthalene and formaldehyde were present at high concentrations. Formaldehyde exceeded again the Dutch threshold limit value resulting in closing the storage rooms for workers. After evaluating the current purification system it was concluded that a wrong filter medium was applied. Additional tests showed that a combination of filters was able to reduce both the concentration naphthalene and formaldehyde. Conclusions Old preservation methods could have a high impact on working with collections due to the emission of harmful volatiles. In our case only improving the air purification the concentration of contaminants indoors could be reduced significantly.
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机译：背景技术自然历史博物馆通过认真关注理解生物多样性来服务社区和科学。最近从不同机构的荷兰昆虫学系列已被组合成一个主要集合。收集保存是基于飞蛾（萘）。旨在建立在搬家前后与昆虫学收集合作的职业健康风险和监测室内空气质量。方法通过分析空气样品并测量通风率，评估旧储藏室的室内空气质量。 TenaxgR用于吸附VOC和DNPH盒用于吸附挥发性羰基。另外，木质柜经受气候室排放试验。结果旧存储库中的800多个机柜，每次有10个抽屉（填充5-6个蛾球）。随后观察到萘和甲醛和甲醛的最高浓度为9300和169μg/ m 3。甲醛浓度超过荷兰阈值限值150μg/ m 3。木制橱柜上的腔室排放试验表明它们主要发射甲醛。所有蛾球被移除，收集被移动。虽然储存库具有空气净化萘，但在高浓度下存在甲醛。甲醛超过荷兰阈值限制值，导致为工人关闭储藏室。在评估当前纯化系统之后，得出结论，施加错误的过滤介质。额外的测试表明过滤器的组合能够减少浓度萘和甲醛。结论旧保存方法可能对由于有害挥发物排放而与收集合作的影响很高。在我们的情况下，只需要改善空气净化，污染物的浓度可以显着减少。
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