Air pollution in the Russian city of St Petersburg was risking the deterioration of historical treasures kept in the State Hermitage Museum. Conservation scientists visited Camfil in Sweden to investigate air quality solutions which could preserve the museum’s precious collection.

中文翻译：

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干净的空气保护俄罗斯的宝藏

俄罗斯圣彼得堡市的空气污染正威胁着保存在俄罗斯冬宫博物馆中的历史珍品的恶化。保护科学家参观了瑞典的坎菲尔，以研究可以保护博物馆珍贵藏品的空气质量解决方案。