请问有没有做过一些土壤的标泥，即土壤的标准物质？有什么浓度范围的？

ll001 2014/10/29

[img]https://ng1.17img.cn/bbsfiles/images/2014/10/201410291508_520620_2083143_3.jpg[/img][img]https://ng1.17img.cn/bbsfiles/images/2014/10/201410291509_520621_2083143_3.jpg[/img][img]https://ng1.17img.cn/bbsfiles/images/2014/10/201410291509_520622_2083143_3.jpg[/img][img]https://ng1.17img.cn/bbsfiles/images/2014/10/201410291509_520623_2083143_3.jpg[/img][img]https://ng1.17img.cn/bbsfiles/images/2014/10/201410291509_520624_2083143_3.jpg[/img][img]https://ng1.17img.cn/bbsfiles/images/2014/10/201410291509_520625_2083143_3.jpg[/img][img]https://ng1.17img.cn/bbsfiles/images/2014/10/201410291509_520626_2083143_3.jpg[/img]