主题：【求助】求问一个EN71-9的计算方式

限量ug/m³ =测得值（ug/g）×10⁶×待测物的比重（g/g）

不对吧，您的面积单位咋出来的啊？等于不了啊。

应该是乘以被测物质的总质量，然后再除以体积吧。
楼主如果说的是solvent inhalation的话应该还有换算因子的。

仪器可以测试溶液浓度，即mg/L单位的浓度。

如果是mg/kg的话需要由ppm=（C X V）/m  导回来。

这样就有了体积单位了。

These limits have been derived from the results obtained on toy samples that were analysed by both this Static
headspace method (A.2) and the Thermal desorption method (A.3). The following values were assumed for the
mass of toy type and its reference volume: tent: 1 kg & 1 m3; inflatable toy: 500 g & 25 m3 (room volume, of which
10 % inhaled); helmet: 200 g & 0,01 m3 (internal volume). The limits should be regarded as indicative and, where
more accurate values can be substituted for the assumptions made, may be adjusted using the following formula
[which is derived from the relative loading factor (see A.3.6.2)]:
Adjusted emission limit = emission limit x assumed mass of toy x substituted reference volume
substituted mass of toy x assumed reference volume

标准有解释，不过看你的客户接不接受，因为严格来说是用热脱跗结果才能判定的。