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固相萃取-气相色谱/质谱法测定河水中16种多环芳烃 总被引:1,自引:0,他引:1
建立了固相萃取-气相色谱/质谱联用测定河水中16种多环芳烃(PAHs)的分析方法。结果表明,以C18为固相萃取柱、10 mL正己烷为洗脱剂,在上样速率为5 mL/min的条件下,用于河水中16种PAHs的检测,均有较好的回收率,在1~200μg/L范围内呈良好的线性关系,相关系数在0.999 46~0.999 99之间,检出限为0.002 6~0.081 3μg/L,加标回收率为91%-119%,相对标准偏差(RSD)在2.4%~9.2%(n=6)之间。方法简便可靠,能够达到水样中16种多环芳烃的检测要求。 相似文献
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The title complex, {[Cd2(1,8-nap)2(H2O)2](bpp)2}n(1), a cadmium complex based on mixed naphthalene-1,8-dicarboxylate (1,8-nap) and flexible 1,3-bi(4-pyridyl)propane (bpp) ligands, has been hydrothermally synthes-ized. It consists of a one-dimensional chain along c axis, which is derived from dimeric unit [Cd2(1,8-nap)2(H2O)2] linked by a pair of bpp ligands. In every [Cd2(1,8-nap)2(H2O)2] dimeric unit, two 1,8-nap act as bridging ligands to connect two Cd(Ⅱ) atoms, forming a sixteen-membered ring. Each Cd(Ⅱ) atom is in a distorted octahedral environment, coordinated by one aqua, two 1,8-nap and two bridging bpp ligands. In addition, two bridging bpp ligands connected two neighboring Cd(Ⅱ) atoms form a twenty-four-membered ring. The TGA and Luminescence property in solid state of complex 1 have been further studied and discussed in this paper. CCDC: 669293. 相似文献
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Two complexes, [Cd(nphth)(2,2'-bipy)(H2O)]2·2H2O(1) and [Cd(nphth)(4,4'-bipy)(H2O)]n(2)(nphth = 3-nitrophthalate, 2,2'-bipy = 2,2'-bipyridine, 4,4'-bipy = 4,4'-bipyridine), were synthesized by hydrothermal reactions and structurally characterized. Complex 1 crystallizes in triclinic with space group P1, a = 0.7599(4), b = 1.0551(6), c = 1.2448(6) nm, α = 88.96(2), β = 75.40(2), γ = 76.76(2)°, V = 0.9393(9) nm3, Z = 1, Dc = 1.816 Mg/m3, F(000) = 512, μ = 1.217 mm-1, S = 0.946, the final R = 0.0238 and w R = 0.0631. Complex 2 crystallizes in monoclinic, space group P21/c, a = 0.737(5), b = 2.338(1), c = 1.0030(6) nm, β = 96.359(9)°, V = 1.803(2) nm3, Z = 4, Dc = 1.826 Mg/m3, F(000) = 984, μ = 1.260 mm-1, S = 1.016, the final R = 0.0455 and wR = 0.1007. Complex 1 exhibits a discrete cyclic binuclear structure and complex 2 possesses a 2D layer structure with cyclic binuclear unit. The fluorescent spectrum study shows that complex 1 exhibits fluorescent emission in the solid state at room temperature. 相似文献
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