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Cholerny Spammer
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 Posted: Thu 22:21, 10 Feb 2011 Post subject: uggs nederland Panyu District, Determination of tr |
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Panyu District, Determination of trace elements in food for export and analysis
0586X. 0.0003, r = 0.9996,[link widoczny dla zalogowanych], Y arsenic = 0.00876X +0.0178, r = 0.9998, Y Cu = 0.01112X +0.0041, r = 0.9994, r values were greater than 0 .999. But in the testing process, graphite furnace atomic absorption method is relatively large background of the need to reduce the sample volume, higher ashing ashing temperature or time, increasing gas flow Jj. 2.2 The working curves obtained within the precision of low, medium and high concentration of three kinds of candy-like, two parallel samples of each concentration averaging (lead content), was repeated eight times (Table 3). 8 replicate measurements and the relative standard deviation (RSD) were less than 10%, indicating that the sample digestion by microwave digestion instrument, the detection volume has stabilized, were smaller, the precision is higher. 2.3 4 candy sampling test results, 3 of vegetables, rice, a total of 89 samples of 2, of which 88 samples pass, a pass rate of 98.88. Analysis of variance, between the candy, vegetables, between rice between lead, arsenic,[link widoczny dla zalogowanych], copper content were not statistically significant (F sugar of lead = 1.49, F sugar arsenic = 1.32, F = 2 copper sugar. 32, F vegetable Lead = 1.25, F vegetable arsenic = 2.54,[link widoczny dla zalogowanych], F vegetable copper = 2.14, Fem = 1.62, F m arsenic = 3.32, F m Cu = 2.64, P are > 0.05). Failed samples for a bubble gum, the copper content exceeded (13.35mg / 1),[link widoczny dla zalogowanych], may be due to contaminated packaging (Table 4). Table 1 Instrument operating parameters of Table 2 lead, arsenic,[link widoczny dla zalogowanych], copper, and the linear relationship (n = 4) 2007 �� 12 �� 13 Volume 4 ~] ScienceofTravelMedicine, Dec. 2007. Vo1.13. No. 4.49 * Table 489 samples of lead, arsenic, copper 3.1 in detection of Panyu District 3 to discuss food exports up 98.88% passing rate of trace elements, which with the Guangdong Entry-Exit Inspection and Quarantine Bureau implementation of the model closely related to the 2]. improve quality, in line with quality management and HACCP principles. 3.2 Rice and vegetables are essential to people daily main food consumption is enormous. The inspection found that rice, vegetables of lead, arsenic, copper content although normal, but compared with the candy (candy raw materials from other provinces or abroad) high, which may be affected by the process of their cultivation of industrial waste water, waste residue, waste gas and solid waste pollution, and therefore, crop production enterprises should pay special attention to environmental pollution, the harm of their products, to take specific measures, the better the raw materials, cultivation and export inspections to ensure product safety, health, environmental quality requirements, improve the ability to fight foreign technical barriers.
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