Soil samples were collected randomly up to a distance
of 20 km from four directions around the closed Kabwe
mine.
土壤樣品從 Kabwe 礦四個(gè)方向20米處隨即采取.
Control samples were collected from Tobwe
Estate,Bonanza,Moyo and Makombe Farms near
Kabwe and Golden Valley,Kyindu farms as well as
Chalimbana International Conservation Research for
Agro-Forestry(ICRAF)/Southern African Development
Community (SADC) station near Lusaka.
收集的樣本來(lái)自Tobwe
Estate,Bonanza,Moyo and Makombe Farms near
Kabwe and Golden Valley,Kyindu farms as well as
Chalimbana International Conservation Research for
Agro-Forestry(ICRAF)/Southern African Development
Community (SADC) station near Lusaka.
這些地方.
Samples were
collected and analysed over a period of 12 months,from
April 1991 to May 1992.
樣本收集和分析期為12個(gè)月,從1991年4月到1992年5月.
At least three composite soil
samples were collected from each sampling point.
每個(gè)點(diǎn)最少取樣為3個(gè).
Soil
samples were collected into transparent plastic bags
using a steel Auger from a depth of 0–15 cm.Samples
were air-dried in the laboratory by spreading out on
transparent plastic on a bench for several days.
土壤樣本用鋼制回旋鉆從0-15米處取出,用塑料袋裝.樣本在實(shí)驗(yàn)室里,陳列在臺(tái)子上自然風(fēng)干數(shù)日.
They
were then passed through a 2 mm sieve and repacked
in transparent plastic bags until they were analysed.
然后用2毫米的沙漏篩過(guò),再重新裝包,等待分析.
20 g of sieved air-dried soil samples were placed in well
cleaned 250 cm3 conical flasks and 100 cm3 of 0.5 M
nitric acid was added.
20克風(fēng)干,篩選過(guò)的樣本放入250毫升的燒瓶加入0.5M 硝酸.
The flasks were mechanically shaken
for at least 30 min using a mechanical shaker.
機(jī)械搖動(dòng)30分鐘.
The
samples were then filtered into 100 cm3 plastic bottles
through ashless Whatman filter paper 40.
之后通過(guò)無(wú)灰濾紙40,放入100毫升瓶子中.
Some control
samples were analysed for background target analytes
and then spiked with known amounts of cadmium,copper,
lead and zinc and passed through the whole process
to determine the recovery rates of extraction procedure.
通過(guò)需要分析的背景目的分析鉻,銅,鉛鋅.通過(guò)分析過(guò)程決定礦物質(zhì)提取方法.
The differences between the background concentrations
and the concentrations of the spiked samples accounted
for the percent recoveries.
對(duì)照樣品含量檢測(cè)結(jié)果和已知的歷史記錄.
General purpose reagent cadmium
nitrate of a minimum purity of 99% was used in
the preparation of solutions used to spike the samples
for cadmium.
用最小99%純度的硝酸溶液檢測(cè)鉻.
An analytical grade of a nitrate salt of lead
and analytical grade granules of copper and zinc were
used in the preparation of solutions used in the spiking
of samples for lead,copper and zinc.
利用已知含量的硝酸鉛和銅、鋅顆粒摻入備好的溶液檢測(cè)鉛、銅鋅.
A reagent blank
for each metal was also prepared and passed through
the whole process and used in the determination of samples
for the chosen metals.
其他的一樣做.
Calibration curves were prepared
using analytical grade metals and metal salts.
利用測(cè)定曲線(xiàn)分析金屬和金屬鹽含量.
Cadmium,copper,lead and zinc were determined using
a Varian Techtron AA6 atomic absorption spectrophotometer
using corresponding metallic hollow cathode
lamps.
太專(zhuān)業(yè)不懂.
Acetylene gas was used as the fuel and air as
the support.
乙炔可用作燃料.
An oxidising flame was used in all cases.
所有的用火.
Table 1 shows the different parameters at which the
instrument was set for each metal.
表1給出每種金屬參數(shù).
Calibration curves were used to calculate the concentrations
of four metals.A reagent blank was used to zero
the instrument.This was followed by aspiration of standard
solutions and finally the soil sample extracts were
Calibration 曲線(xiàn)用來(lái)計(jì)算4種金屬含量.空著的是0.這步之后土壤樣品就分析好了.
分太少,就這吧,大概結(jié)構(gòu)應(yīng)該能看懂了.專(zhuān)業(yè)的東西你自己再查查.這是教材里的東西嗎?我是礦業(yè)工程師.