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　　生活(huo)中(zhong)，人(ren)們經常擔(dan)心農產品(pin)的(de)質(zhi)量(liang)安全問題，包括農產品(pin)中(zhong)的(de)重(zhong)金屬殘留。在(zai)種植過程中(zhong)，土壤(rang)中(zhong)的(de)有毒有害重(zhong)金屬會通過遷移被農產品(pin)吸(xi)收，從而危害人(ren)體健康。因此，有必要(yao)對(dui)土壤(rang)重(zhong)金屬的(de)各(ge)項指標(biao)進行檢測。

　　土(tu)(tu)壤(rang)(rang)(rang)(rang)中(zhong)(zhong)的(de)(de)(de)重(zhong)(zhong)金(jin)屬(shu)污染種(zhong)類(lei)繁(fan)多(duo)，能夠污染土(tu)(tu)壤(rang)(rang)(rang)(rang)的(de)(de)(de)重(zhong)(zhong)金(jin)屬(shu)種(zhong)類(lei)繁(fan)多(duo)，包括(kuo)具(ju)有(you)一定生(sheng)(sheng)物(wu)(wu)(wu)毒(du)(du)性(xing)的(de)(de)(de)重(zhong)(zhong)金(jin)屬(shu)如Hg、Cr、Pb等具(ju)有(you)一定生(sheng)(sheng)物(wu)(wu)(wu)毒(du)(du)性(xing)的(de)(de)(de)重(zhong)(zhong)金(jin)屬(shu)，以及如Zn等毒(du)(du)性(xing)較(jiao)小的(de)(de)(de)金(jin)屬(shu)元(yuan)素。這些具(ju)有(you)明顯生(sheng)(sheng)物(wu)(wu)(wu)毒(du)(du)性(xing)的(de)(de)(de)金(jin)屬(shu)一旦(dan)進(jin)入土(tu)(tu)壤(rang)(rang)(rang)(rang)，就會被土(tu)(tu)壤(rang)(rang)(rang)(rang)中(zhong)(zhong)的(de)(de)(de)膠體(ti)吸附，然(ran)后這些重(zhong)(zhong)金(jin)屬(shu)與土(tu)(tu)壤(rang)(rang)(rang)(rang)中(zhong)(zhong)的(de)(de)(de)無機(ji)(ji)(ji)物(wu)(wu)(wu)和有(you)機(ji)(ji)(ji)物(wu)(wu)(wu)發生(sheng)(sheng)反(fan)應，形成(cheng)全(quan)新的(de)(de)(de)混合(he)物(wu)(wu)(wu)。這種(zhong)混合(he)物(wu)(wu)(wu)將不再與土(tu)(tu)壤(rang)(rang)(rang)(rang)中(zhong)(zhong)的(de)(de)(de)其他有(you)機(ji)(ji)(ji)和無機(ji)(ji)(ji)物(wu)(wu)(wu)質(zhi)發生(sheng)(sheng)反(fan)應，因此不會被土(tu)(tu)壤(rang)(rang)(rang)(rang)中(zhong)(zhong)的(de)(de)(de)微生(sheng)(sheng)物(wu)(wu)(wu)分解，成(cheng)為一種(zhong)存在于土(tu)(tu)壤(rang)(rang)(rang)(rang)中(zhong)(zhong)的(de)(de)(de)不可降解物(wu)(wu)(wu)質(zhi)。經過時(shi)間的(de)(de)(de)積累，混合(he)物(wu)(wu)(wu)的(de)(de)(de)數量(liang)增加(jia)并導致(zhi)土(tu)(tu)壤(rang)(rang)(rang)(rang)發生(sheng)(sheng)變化(hua)。

　　以往測(ce)(ce)土(tu)主(zhu)要(yao)采用(yong)傳統(tong)方法(fa)(fa)，檢(jian)(jian)(jian)測(ce)(ce)過程相對復(fu)雜，檢(jian)(jian)(jian)測(ce)(ce)時(shi)(shi)(shi)間長，檢(jian)(jian)(jian)測(ce)(ce)效率低，無法(fa)(fa)在(zai)短(duan)時(shi)(shi)(shi)間內(nei)準(zhun)(zhun)確(que)檢(jian)(jian)(jian)測(ce)(ce)樣品。現(xian)(xian)在(zai)可(ke)以使用(yong)土(tu)壤重金屬(shu)檢(jian)(jian)(jian)測(ce)(ce)儀進行快速檢(jian)(jian)(jian)測(ce)(ce)，在(zai)現(xian)(xian)場，無需準(zhun)(zhun)備(bei)樣品即可(ke)直接分析土(tu)壤，減少(shao)了人(ren)工檢(jian)(jian)(jian)測(ce)(ce)的時(shi)(shi)(shi)間，提高了測(ce)(ce)土(tu)質(zhi)量。