徽杭高速公路鉛污染特征分析畢業(yè)論文(已修改)
2025-07-02 07:58 本頁面
【正文】 徽杭高速公路鉛污染特征研究 目 錄中文摘要……………………………………………………………………………2外文摘要……………………………………………………………………………3引言……………………………………………………………………………………41. 鉛的現(xiàn)狀分析……………………………………………………………………4………………………………………………………………………4…………………………………………………………………………5…………………………………………………………………………5…………………………………………………………6 …………………………………………………………6 ……………………………………………6 …………………………………………………………目的及意義……………………………………………………7………………………………………………………………………8 徽杭高速公路概況……………………………………………………………8 黃山土壤概況…………………………………………………………………8……………………………………………………………………………8 采樣點(diǎn)的選擇…………………………………………………………………8 土壤的采集……………………………………………………………………8 實(shí)驗(yàn)室測(cè)定……………………………………………………………………9 土壤含水率的測(cè)定………………………………………………………9 土壤pH的測(cè)定……………………………………………………………9 土壤有效鉛的測(cè)定………………………………………………………9…………………………………………………………………11 土壤含水率變化及分析……………………………………………………11 土壤含水率結(jié)果………………………………………………………11 含水率結(jié)果分析………………………………………………………13 土壤pH的變化和分析……………………………………………………13 土壤pH測(cè)量結(jié)果……………………………………………………13 pH結(jié)果分析……………………………………………………………13 土壤有效鉛的含量與分析………………………………………………14 土壤有效鉛測(cè)量結(jié)果…………………………………………………14 土壤有效鉛含量結(jié)果分析……………………………………………16……………………………………………………………………………… 16參考文獻(xiàn)…………………………………………………………………………… 17致謝………………………………………………………………………………… 19徽杭高速公路鉛污染特征研究張建指導(dǎo)老師：徐圣友（黃山學(xué)院生命與環(huán)境科學(xué)學(xué)院，黃山，安徽 245041）摘要：通過對(duì)黃山學(xué)院至屯溪收費(fèi)站段徽杭高速公路6個(gè)樣點(diǎn)18個(gè)土壤樣品的含水率、pH的測(cè)量,以及用原子吸收分光光度法對(duì)用DTPA浸提土壤中的重金屬鉛進(jìn)行監(jiān)測(cè)分析，并用土壤環(huán)境質(zhì)量標(biāo)準(zhǔn)對(duì)該土壤中鉛的污染程度進(jìn)行了評(píng)價(jià)。結(jié)果表明：在距公路相等距離的采樣點(diǎn)土壤的含水率有相似的規(guī)律；土壤的pH則大部分成酸性，只有少部分呈弱堿性；公路旁土壤沒有受到鉛污染。從實(shí)驗(yàn)數(shù)據(jù)明顯可以看出，在橫向上，距離公路0m、25m處表層土壤（010cm）有效鉛積累較少，而距離公路50m處的表層土壤鉛積累最多。在縱向上，自然狀態(tài)下，總體呈現(xiàn)出土壤含鉛量規(guī)律為，表層土壤（010cm）中層土壤（1020cm）下層土壤（2030cm），而由于受人為影響遠(yuǎn)離公路受鉛污染明顯，故靠近公路的中層土壤的含鉛量低于下層土壤的含鎘量。所有土壤中的鉛含量均達(dá)到國家一級(jí)標(biāo)準(zhǔn)。關(guān)鍵詞：徽杭高速公路。鉛污染。pH。含水率。特征HuiHang Expressway characteristics of lead pollutionZhangInstructor: Xu Shengyou(Huangshan College of Life and Environmental Sciences, Mount Huangshan, Anhui 245041)Abstract: College to Tunxi Huangshan AnhuiHangzhou Expressway Toll Station Section 6 of 18 samples the moisture content of soil samples, pH measurements, and using atomic absorption spectrophotometry using DTPA extraction of heavy metals in soil lead to monitoring and analysis, and soil environmental quality standards for the use of lead in soil pollution levels were evaluated. The results showed that: in the same distance from the road on the moisture content of soil samples have similar laws。 soil pH, and the majority into acidic, only a small part of a weak alkaline。 As can be seen clearly from the experimental data, the horizontal distance road 0m, 25m Department topsoil (010cm) of lead accumulated less effective, and 50m from the Highway Department, the largest accumulation of lead in surface soil. In the vertical, the natural state, showing a general law for the soil lead content, surface soil (010cm) middle soil (1020cm) lower soil (2030cm), but far from the highway due to human impact significantly affected by lead contamination, so close to the middle road lead content of soil below the lower content of cadmium in the soil. All the l
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