Haloanisoles are responsible for musty or mouldy off-flavours in wine. These molecules are extremely odorous and they alter wines in an irreversible way. The origin of haloanisoles can be attributed to the biodegradation of halophenols, which can be found in winery environments. Various materials including oak products (wood tanks, barrels, chips, staves) may be contaminated by haloanisoles and halophenols. Once polluted, these materials may release these molecules into wine. Requests for analyses of haloanisoles and halophenols in oak wood have gradually increased in recent years, above all from the coopers, who want to prove the quality of their products. However, the lack of an official testing method is an obstacle for the performance monitoring of laboratories. In response to these challenges, BIPEA organises, since October 2013, regular proficiency-testing schemes (PTS) for the detection and quantification of these molecules in oak wood. For each test, the statistical treatment of laboratories’ results is performed according to ISO 13528. These PTS enable the participating laboratories to compare with each other, draw up a general inventory of their analytical skills and improve their performances for the detection and quantification of haloanisoles and halophenols in oak wood.

中文翻译：

---

橡木中卤代茴香醚和卤代酚的能力验证方案

卤茴香醚是导致葡萄酒发霉或发霉的异味的原因。这些分子具有极强的气味，它们以不可逆转的方式改变了葡萄酒。卤代苯甲醚的起源可归因于卤代酚的生物降解，卤代酚可以在酒厂环境中找到。包括橡木制品在内的各种材料（木罐、木桶、木片、木条）都可能被卤代苯甲醚和卤代酚污染。一旦受到污染，这些材料可能会将这些分子释放到酒中。近年来，对橡木中卤代苯甲醚和卤代酚的分析要求逐渐增加，尤其是来自想要证明其产品质量的制桶商。然而，缺乏官方测试方法是实验室性能监控的障碍。为应对这些挑战，BIPEA 自 2013 年 10 月起组织了 用于检测和量化橡木中这些分子的常规能力验证计划 (PTS)。对于每项测试，实验室结果的统计处理均根据 ISO 13528 进行。这些 PTS 使参与实验室能够相互比较，制定其分析技能的总体清单，并提高其检测和量化卤代茴香醚的性能和橡木中的卤酚。