研究表明，汽车座椅泡沫可能会释放出致癌化学物质

美国东部时间 2024 年 5 月 8 日下午 4：00

作者：克里斯托弗·史密斯https://cdn.motor1.com/images/mgl/g4Jw7E/s3/2023-mercedes-glc-coupe.jpg

驾驶机动车当然会带来一定程度的风险，但开车时呼吸通常不在其中。根据美国化学学会最近发表的一项研究，情况可能并非如此。它指出了一种用于汽车座椅的特定阻燃化学品，该化学品是在汽车驾驶室的空气中发现的。如果你吸入它，它可能会增加你患癌症的风险。

所讨论的化学物质是磷酸三（1-氯异丙基）酯，简称TCIPP。它是一种常用于聚氨酯泡沫的阻燃添加剂，如今几乎每辆汽车的座椅都常用于聚氨酯泡沫。该研究包括 155 名驾驶 2015 年或更新车辆的参与者。为了确定与温度有关的潜在变化，在冬季进行了 101 次测试，在夏季进行了 54 次测试。https://cdn.motor1.com/images/mgl/y0LWq/s1/2021-ford-bronco.jpg

结果相当简单。整整99%的车辆在空气中显示出TCIPP的痕迹，与存在添加剂的座椅泡沫样品相匹配。在温暖的温度下，空气中TCIPP的浓度高出两到五倍。简而言之，热量会促进座椅的释气，从而将更多的化学物质排放到空气中。

我们到底在谈论多少 TCIPP？研究发现每克0.2至11,600纳克。一纳克是十亿分之一克，所以这是一个非常小的数量。但是，2023 年的一份毒理学报告发现 TCIPP 与大鼠之间可能存在致癌联系。因此，即使是很小的曝光也可能有问题。

这在一定程度上是该研究试图确定的。阻燃化学品的影响已经在各种情况下进行了评估，但研究人员表示，汽车领域是一个“未被充分研究的来源”。AAA表示，美国司机平均每天在汽车上花费一个小时，而温度升高可能会使集中的环境变得更糟。该研究建议，如果停在外面，请打开窗户，以降低室内温度并促进更好的气流。使用空调和避免内部再循环设置也可能有所帮助。

最终，该研究得出的结论是，需要更多的评估来充分了解TCIPP在汽车中的潜在危险范围。

资料来源：环境科学与技术

原文阅读

Car Seat Foam Could Emit Cancer-Causing Chemicals, Study Says

The study found that 99 percent of cars have a carcinogenic flame-retardant chemical in the air.

May 8, 2024 at 4:00pm ET

By: Christopher Smith

Operating a motor vehicle certainly comes with a level of risk, but simply breathing while driving usually isn't among them. That may not be the case, according to a recent study published by the American Chemical Society. It points to a specific flame-retardant chemical used on vehicle seats discovered in the air of car cabins. And it could increase your risk of cancer if you breathe it in.

The chemical in question is tris (1-chloro-isopropyl) phosphate, known simply as TCIPP. It's a flame-retardant additive commonly used in polyurethane foam, which is commonly used for seats in pretty much every car on the road today. The study included 155 participants driving vehicles from 2015 or newer. To determine potential changes relating to temperatures, 101 tests were conducted in winter and 54 took place in the summer.

The results were fairly straightforward. A full 99 percent of vehicles showed traces of TCIPP in the air, matching samples of seat foam in which the additive was present. In warm temperatures, the concentration of airborne TCIPP was between two and five times higher. In short, the heat promotes outgassing from the seats, putting more of the chemical in the air.

Exactly how much TCIPP are we talking about? The study found 0.2 to 11,600 nanograms per gram. One nanogram is a billionth of a gram, so it's an exceedingly small quantity. But, a 2023 toxicology report found possible carcinogenic connections between TCIPP and rats. So even a small exposure could be problematic.

That's partly what the study seeks to determine. The effects of flame retardant chemicals have been evaluated in various situations, but researchers say the automotive realm is an "understudied source." AAA says the average American driver spends an hour every day in a car, and the concentrated environment can be made worse by warmer temperatures. The study recommends opening windows if parked outside to both reduce interior temperatures and promote better airflow. Using air conditioning and avoiding the interior recirculation setting may also help.

Ultimately, the study concludes by saying more evaluation is needed to fully understand the scope of potential danger regarding TCIPP in automobiles.

Source: Environmental Science & Technology via People