CN112129745A - 一种微波消解-石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法 - Google Patents
一种微波消解-石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法 Download PDFInfo
- Publication number
- CN112129745A CN112129745A CN202010743457.7A CN202010743457A CN112129745A CN 112129745 A CN112129745 A CN 112129745A CN 202010743457 A CN202010743457 A CN 202010743457A CN 112129745 A CN112129745 A CN 112129745A
- Authority
- CN
- China
- Prior art keywords
- lead
- solution
- standard
- digestion
- graphite furnace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 244000025254 Cannabis sativa Species 0.000 title claims abstract description 32
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 title claims abstract description 30
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 title claims abstract description 30
- 235000009120 camo Nutrition 0.000 title claims abstract description 30
- 235000005607 chanvre indien Nutrition 0.000 title claims abstract description 30
- 239000011487 hemp Substances 0.000 title claims abstract description 30
- 239000010439 graphite Substances 0.000 title claims abstract description 29
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000000284 extract Substances 0.000 title claims abstract description 26
- 238000012545 processing Methods 0.000 title claims abstract description 25
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 22
- 239000012086 standard solution Substances 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000000120 microwave digestion Methods 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 6
- 239000000243 solution Substances 0.000 claims description 36
- 239000011550 stock solution Substances 0.000 claims description 23
- 239000000523 sample Substances 0.000 claims description 22
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 20
- 229910017604 nitric acid Inorganic materials 0.000 claims description 20
- 230000029087 digestion Effects 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 17
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 claims description 16
- 238000007865 diluting Methods 0.000 claims description 10
- 238000002835 absorbance Methods 0.000 claims description 9
- 239000012490 blank solution Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 9
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 8
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 8
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 239000012488 sample solution Substances 0.000 claims description 6
- 238000001228 spectrum Methods 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 239000003153 chemical reaction reagent Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000005464 sample preparation method Methods 0.000 claims description 2
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 2
- 239000012498 ultrapure water Substances 0.000 claims description 2
- 238000005485 electric heating Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 6
- QHMBSVQNZZTUGM-UHFFFAOYSA-N Trans-Cannabidiol Natural products OC1=CC(CCCCC)=CC(O)=C1C1C(C(C)=C)CCC(C)=C1 QHMBSVQNZZTUGM-UHFFFAOYSA-N 0.000 description 14
- QHMBSVQNZZTUGM-ZWKOTPCHSA-N cannabidiol Chemical compound OC1=CC(CCCCC)=CC(O)=C1[C@H]1[C@H](C(C)=C)CCC(C)=C1 QHMBSVQNZZTUGM-ZWKOTPCHSA-N 0.000 description 14
- 229950011318 cannabidiol Drugs 0.000 description 14
- ZTGXAWYVTLUPDT-UHFFFAOYSA-N cannabidiol Natural products OC1=CC(CCCCC)=CC(O)=C1C1C(C(C)=C)CC=C(C)C1 ZTGXAWYVTLUPDT-UHFFFAOYSA-N 0.000 description 14
- PCXRACLQFPRCBB-ZWKOTPCHSA-N dihydrocannabidiol Natural products OC1=CC(CCCCC)=CC(O)=C1[C@H]1[C@H](C(C)C)CCC(C)=C1 PCXRACLQFPRCBB-ZWKOTPCHSA-N 0.000 description 14
- 229910001385 heavy metal Inorganic materials 0.000 description 10
- 239000003921 oil Substances 0.000 description 6
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 235000008697 Cannabis sativa Nutrition 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- CYQFCXCEBYINGO-UHFFFAOYSA-N THC Natural products C1=C(C)CCC2C(C)(C)OC3=CC(CCCCC)=CC(O)=C3C21 CYQFCXCEBYINGO-UHFFFAOYSA-N 0.000 description 2
- 229930003827 cannabinoid Natural products 0.000 description 2
- 239000003557 cannabinoid Substances 0.000 description 2
- 229940065144 cannabinoids Drugs 0.000 description 2
- CYQFCXCEBYINGO-IAGOWNOFSA-N delta1-THC Chemical compound C1=C(C)CC[C@H]2C(C)(C)OC3=CC(CCCCC)=CC(O)=C3[C@@H]21 CYQFCXCEBYINGO-IAGOWNOFSA-N 0.000 description 2
- 229960004242 dronabinol Drugs 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000419 plant extract Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 150000003505 terpenes Chemical class 0.000 description 2
- 235000007586 terpenes Nutrition 0.000 description 2
- 208000030507 AIDS Diseases 0.000 description 1
- 235000011624 Agave sisalana Nutrition 0.000 description 1
- 244000198134 Agave sisalana Species 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 230000003542 behavioural effect Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 210000002249 digestive system Anatomy 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 206010015037 epilepsy Diseases 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229930003935 flavonoid Natural products 0.000 description 1
- 150000002215 flavonoids Chemical class 0.000 description 1
- 235000017173 flavonoids Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000003394 haemopoietic effect Effects 0.000 description 1
- 208000026278 immune system disease Diseases 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000001766 physiological effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000002133 sample digestion Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
- 239000012224 working solution Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
- G01N21/74—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited using flameless atomising, e.g. graphite furnaces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4044—Concentrating samples by chemical techniques; Digestion; Chemical decomposition
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
- G01N21/74—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited using flameless atomising, e.g. graphite furnaces
- G01N2021/745—Control of temperature, heating, ashing
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
本发明涉及检测技术领域,特别涉及一种微波消解‑石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法。本方法将工业大麻加工提取物样品经微波消解处理后,利用石墨炉原子吸收分光光度计进行样品中铅测定。微波消解‑石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法,方法步骤如下:第一步:样品制备;第二步:铅标准溶液的配制;第三步:仪器设置;第四步:标准品及样品的铅的测定。
Description
技术领域
本发明涉及检测技术领域,特别涉及一种微波消解-石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法。
背景技术
重金属广泛存在于植物提取加工过程中,大多数重金属对人体具有毒性作用,而且 由于其可以在人体内累积,长期摄入重金属含量较高的植物提取物并在体内蓄积至一定量时 可引起免疫系统障碍和多种功能损害,并抑制人体的正常生理作用,甚至导致疾病的发生。 因此,有害重金属元素的残留量愈来愈受到重视。铅(Pb)是植物提取物中可能存在的主要 重金属元素,研究表明它们可导致人体呼吸系统、消化系统和神经系统等多种器官和组织的 损伤。铅(Pb)可导致人体神经系统、造血系统和血管产生病变,并可导致儿童智能发育障 碍和行为异常。
工业大麻的是指四氢大麻酚(THC)含量低于 0.3% 的大麻,时下,工业大麻正成为全球热点,工业大麻中的无瘾非毒成分大麻二酚(以下简称CBD)是治病良药,用于制药可对许多疾病有改善作用:癫痫、帕金森、艾滋病等。因其重要且稀缺,在国际市场上价格堪比黄金。在欧美国家CBD产品十分受欢迎,是流行的保健营养品。目前CBD产品主要有CBD晶体、CBD全谱油(含有所有大麻素、萜烯和黄酮类化合物) 、CBD多谱油(被完全或部分消除了大麻素、植物原料和萜烯)。欧美发达国家已经有多种相关终端产品(药品、化妆品、保健品)在市场销售,国内市场亦有越来越多的相关日化品上市。
CBD产品主要由提取工业大麻花叶中有效成分而得,如果种植土壤、水体中存在重金属污染,则有可能通过生物富集作用富集于工业大麻植株中,进而可能存在工业大麻提取物中。在加工提取过程中也有可能引入重金属污染,危害人体健康。因此开展工业大麻加工提取物中重金属的检测方法研究,对保证CBD产品质量、对CBD产品走出国门,参与国际市场的竞争具有重要的现实意义。
专利CN 110596229 A公开了一种大麻提取物和大麻油产品中元素杂质的检测方法,使用电感耦合等离子体质谱检测法同时检测4种元素,但电感耦合等离子体质谱仪价格昂贵,环境要求要,难以普及。
发明内容
本发明的目的是提供一种用微波消解仪进行样品消解、石墨炉原子吸收光谱仪测定工业大麻加工提取物中铅含量的方法。
为实现上述目的,本发明的技术方案如下:
(1)一种微波消解-石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法,其特征在于,包括如下步骤:
第一步:样品制备。
第二步:铅标准溶液的配制。
第三步:仪器设置。
第四步:标准品及样品的铅的测定。
(2)进一步地,步骤(1)中所述工业大麻加工提取物包括CBD晶体、CBD全谱油、CBD广谱油。
(3)进一步的,步骤(1)中所述第一步样品制备方法如下:
①取供试品约0.2g,精确至0.0001g,置聚四氟乙烯消解罐内,加硝酸5mL,混匀,浸泡过夜,盖好内盖,旋紧外套,置微波消解仪内,进行消解。
②所述微波消解的条件设置:温度180℃,升温时间25min,保持时间30min,模式旋转。
③消解完余后,取消解内罐置于电热板上,在140℃~ 160℃条件下缓缓加热至红棕色蒸气挥尽,并继续浓缩至2〜3mL,放冷,转入 25mL塑料容量瓶中,用2%硝酸溶液清洗消解内罐数次,清洗液转移至容量瓶,用2%硝酸溶液定容,摇匀,即得。至少制备两个平行样品,同时同法制备试剂空白对照溶液。
(4)进一步的,步骤中(1)所述第二步铅标准溶液的配制步骤如下:
①铅标准贮备液的制备:精密量取铅单元素标准溶液(浓度均为1000μg/mL,带证标品)1mL,用2%硝酸溶液稀释至10mL,制成浓度为100μg/mL 的铅(Pb )一级标准贮备液;精密量取铅一级标准贮备液1mL,用2%硝酸溶液稀释至100mL,制成浓度为1μg/mL 的铅(Pb )二级标准贮备液,于0〜5℃下储存。
②铅标准曲线的制备:分别准确量取铅二级标准贮备液适量,用2%硝酸溶液稀释为 0ng/mL、5ng/mL、20ng/mL、40ng/mL、60ng/mL、80ng/mL的铅标准曲线溶液。
(5)进一步的,步骤(1)中所述第三步:仪器设置包括如下参数:
①仪器参数:灯电流10mA,狭缝0.5nm,氩气瓶减压阀压力调节为0.5MPa,配循环冷却水系统;进样体积均为20μL;以石墨炉为原子化器,采用原子吸收分光光度计在283.3nm波长处测定。
②石墨炉升温程序如下:5s升温至100℃,保持20s;5s升温至500℃,保持20s;0s升温至2100℃,保持3s;0s升温至2200℃,保持2s。
(6)进一步地,步骤(1)中所述第四步:标准品及样品中的铅的测定,包括步骤如下:
①标准曲线溶液测定:铅标准系列曲线溶液每个浓度分别精密量取1mL,准确加入含1%磷酸二氢铵和0.2%硝酸镁的溶液0.5mL,混匀。在权利要求5中条件下,注入石墨炉原子化器,测定吸光度,以吸光度为纵坐标,浓度为横坐标,绘制标准曲线。
②样品测定:精密量取空白溶液与供试品溶液各1mL,准确加入含 1%磷酸二氢铵和 0.2%硝酸镁的溶液0.5mL,混匀,照标准曲线的制备项下方法测定吸光度,从标准曲线上读出空白溶液及供试品溶液中铅(Pb)的含量,扣除空白后计算得样品中铅(Pb)的含量。
(7)进一步地,所述一种微波消解-石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法,其特征在于,所述硝酸为优级纯;所述水为自制超纯水。
(8)进一步地,所述一种微波消解-石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法,其特征在于,所述磷酸二氢铵及硝酸镁为优级纯。
本发明的优点:
①本发明建立了一种利用石墨炉原子吸收光谱检测工业大麻加工提取物中铅含量的方法,为确定工业大麻加工提取物中铅含量的检测提供科学依据。
②本方法操作简单易行,稳定性好,准确性高;检测成本低、易于推广。
具体实施方式
实施例
一种微波消解-石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法包括如下步骤:
(1)样品制备
①取CBD全谱油供试品约0.2g,精确至0.0001g,置聚四氟乙烯消解罐内,加硝酸5mL,混匀,浸泡过夜,盖好内盖,旋紧外套,置微波消解仪内,进行消解。微波消解的条件设置:温度180℃,升温时间25min,保持时间30min,模式旋转;
②消解完余后,取消解内罐置于电热板上,在140℃~ 160℃条件下缓缓加热至红棕色蒸气挥尽,并继续浓缩至2〜3mL,放冷,转入 25mL塑料容量瓶中,用2%硝酸溶液清洗消解内罐数次,清洗液转移至容量瓶中,用2%硝酸溶液稀释至刻度,摇匀,即得。至少制备两个平行样品,同时同法制备试剂空白对照溶。
(2)铅标准溶液的配制
①精密量取铅单元素标准溶液(浓度均为1000μg/mL,带证标品)1mL,用2%硝酸溶液稀释至10mL,制成浓度为100μg/mL 的铅(Pb )一级标准贮备液;精密量取铅一级标准贮备液1mL,用2%硝酸溶液稀释至100mL,制成浓度为1μg/mL 的铅(Pb )二级标准贮备液,于0〜5℃下储存;
②铅标准曲线的制备:分别精密量取铅二级标准贮备液适量,用2%硝酸溶液稀释为0ng/mL、5ng/mL、20ng/mL、40ng/mL、60ng/mL、80ng/mL的铅标准曲线溶液。
(3)仪器设置
①仪器参数:灯电流10mA,狭缝0.5nm,氩气瓶减压阀压力调节为0.5MPa,配循环冷却水系统;进样体积均为20μL;以石墨炉为原子化器,采用原子吸收分光光度计在283.3nm波长处测定;
②石墨炉升温程序如下:5s升温至100℃,保持20s;5s升温至500℃,保持20s;0s升温至2100℃,保持3s;0s升温至2200℃,保持2s。
(4)标准品及样品中铅的测定
①标准曲线溶液测定:铅标准曲线溶液每个浓度分别精密量取1mL,准确加入含1%磷酸二氢铵和0.2%硝酸镁的溶液0.5mL,混匀。在权利要求5中条件下,注入石墨炉原子化器,测定吸光度,以吸光度为纵坐标,浓度为横坐标,绘制标准曲线;
②样品测定:精密量取空白溶液与供试品溶液各1mL,准确加入含 1%磷酸二氢铵和0.2%硝酸镁的溶液0.5mL,混匀,照标准曲线的制备项下方法测定吸光度,从标准曲线上读出空白溶液及供试品溶液中铅(Pb)的含量,扣除空白后计算得样品中铅(Pb)的含量。
铅(Pb)标准工作溶液的线性方程、相关系数见表1,实施例样品检测结果见表2。
表1 铅(Pb) 标准工作曲线的线性方程、相关系数
表2 实施例样品中铅(Pb)检测结果
以上所述仅是对本发明予以解释说明,而非对其限制。对于本领域的技术人员而言,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡未脱离本发明技术精神所作的任何修改、等同替换、改进或变更均在本发明的保护范围之内。
Claims (8)
1.一种微波消解-石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法,其特征在于,包括如下步骤:
第一步:样品制备;
第二步:铅标准溶液的配制;
第三步:仪器设置;
第四步:标准品及样品的铅的测定。
2.一种微波消解-石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法,其特征在于所述工业大麻加工提取物包括CBD晶体、CBD全谱油、CBD广谱油。
3.一种微波消解-石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法,其特征在于,第一步中所述样品制备方法步骤如下:
(1)取供试品约0.2g,精确至0.0001g,置聚四氟乙烯消解罐内,加硝酸5mL,混匀,浸泡过夜,盖好内盖,旋紧外套,置微波消解仪内,进行消解;
(2)所述微波消解的条件设置:温度180℃,升温时间25min,保持时间30min,模式旋转;
(3)消解完余后,取消解内罐置于电热板上,在140℃~ 160℃条件下缓缓加热至红棕色蒸气挥尽,并继续浓缩至2〜3mL,放冷,转入 25mL塑料容量瓶中,用2%硝酸溶液清洗消解内罐数次,清洗液转移至容量瓶,用2%硝酸溶液定容,摇匀,即得;至少制备两个平行样品,同时同法制备试剂空白对照溶液。
4.一种微波消解-石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法,其特征在于,第二步中所述铅标准溶液的配制步骤如下:
(1)铅标准贮备液的制备:精密量取铅单元素标准溶液(浓度均为1000μg/mL,带证标品)1mL,用2%硝酸溶液稀释至10mL,制成浓度为100μg/mL 的铅(Pb )一级标准贮备液;精密量取铅一级标准贮备液1mL,用2%硝酸溶液稀释至100mL,制成浓度为1μg/mL 的铅(Pb )二级标准贮备液,于0〜5℃下储存;
(2)铅标准曲线的制备:分别准确量取铅二级标准贮备液适量,用2%硝酸溶液稀释为0ng/mL、5ng/mL、20ng/mL、40ng/mL、60ng/mL、80ng/mL的铅标准系列曲线溶液。
5.一种微波消解-石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法,其特征在于,第三步中所述仪器设置包括如下参数:
(1)仪器参数:灯电流10mA,狭缝0.5nm,氩气瓶减压阀压力调节为0.5MPa,配循环冷却水系统;进样体积均为20μL;以石墨炉为原子化器,采用原子吸收分光光度计在283.3nm波长处测定;
(2)石墨炉升温程序如下:5s升温至100℃,保持20s;5s升温至500℃,保持20s;0s升温至2100℃,保持3s;0s升温至2200℃,保持2s。
6.一种微波消解-石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法,其特征在于,第四步中所述标准品及样品中的铅的测定,包括步骤如下:
(1) 标准曲线溶液测定:铅标准系列曲线溶液每个浓度分别准确量取1mL,准确加入含1%磷酸二氢铵和0.2%硝酸镁的溶液0.5mL,混匀;在权利要求5中条件下,注入石墨炉原子化器,测定吸光度,以吸光度为纵坐标,浓度为横坐标,绘制标准曲线;
(2) 样品测定:精密量取空白溶液与供试品溶液各1mL,准确加入含 1%磷酸二氢铵和0.2%硝酸镁的溶液0.5mL,混匀,照标准曲线的制备项下方法测定吸光度,从标准曲线上读出空白溶液及供试品溶液中铅(Pb)的含量,扣除空白后计算得样品中铅(Pb)的含量。
7.一种微波消解-石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法,其特征在于,所述硝酸为优级纯;所述水为自制超纯水。
8.一种微波消解-石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法,其特征在于,所述磷酸二氢铵和硝酸镁为优级纯。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010743457.7A CN112129745B (zh) | 2020-07-29 | 2020-07-29 | 一种微波消解-石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010743457.7A CN112129745B (zh) | 2020-07-29 | 2020-07-29 | 一种微波消解-石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN112129745A true CN112129745A (zh) | 2020-12-25 |
CN112129745B CN112129745B (zh) | 2024-04-19 |
Family
ID=73850869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202010743457.7A Active CN112129745B (zh) | 2020-07-29 | 2020-07-29 | 一种微波消解-石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112129745B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116499834A (zh) * | 2023-06-19 | 2023-07-28 | 北京建工环境修复股份有限公司 | 一种用于消解土壤重金属的消化回流装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180143212A1 (en) * | 2014-12-23 | 2018-05-24 | Biotech Institute, Llc | A reliable and robust method for the analysis of cannabinoids and terpenes in cannabis |
CN108414460A (zh) * | 2018-01-26 | 2018-08-17 | 昆明理工大学 | 基于银纳米紫外可见分光光度法测定工业提取大麻二酚含量的方法 |
CN110596229A (zh) * | 2019-09-23 | 2019-12-20 | 凯纳比斯药业有限公司 | 一种大麻提取物和大麻油产品中元素杂质的检测方法 |
-
2020
- 2020-07-29 CN CN202010743457.7A patent/CN112129745B/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180143212A1 (en) * | 2014-12-23 | 2018-05-24 | Biotech Institute, Llc | A reliable and robust method for the analysis of cannabinoids and terpenes in cannabis |
CN108414460A (zh) * | 2018-01-26 | 2018-08-17 | 昆明理工大学 | 基于银纳米紫外可见分光光度法测定工业提取大麻二酚含量的方法 |
CN110596229A (zh) * | 2019-09-23 | 2019-12-20 | 凯纳比斯药业有限公司 | 一种大麻提取物和大麻油产品中元素杂质的检测方法 |
Non-Patent Citations (3)
Title |
---|
AGALU ZERIHUN ET AL.: "Levels of selected metals in leaves of Cannabis sativa L. cultivated in Ethiopia", SPRINGERPLUS, vol. 04, no. 359, pages 1 - 10 * |
曾玉梅等: "原子吸收光谱法测定小儿牛黄散中铅 镉 铜的含量", 解放军药学学报, vol. 29, no. 05, pages 447 - 449 * |
李峰 等: "微波消解石墨炉原子吸收法测定烟草中的铅含量", 烟草科技, no. 09, pages 38 - 40 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116499834A (zh) * | 2023-06-19 | 2023-07-28 | 北京建工环境修复股份有限公司 | 一种用于消解土壤重金属的消化回流装置 |
CN116499834B (zh) * | 2023-06-19 | 2023-09-08 | 北京建工环境修复股份有限公司 | 一种用于消解土壤重金属的消化回流装置 |
Also Published As
Publication number | Publication date |
---|---|
CN112129745B (zh) | 2024-04-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN104697983A (zh) | 一种中药饮片中重金属铅、镉、砷、铜的检测方法 | |
CN108459096B (zh) | 采用黑顺片自动化提取过程中实时放行方法所得的黑顺片提取液及参附注射液 | |
CN106978160B (zh) | 氮硫掺杂碳纳米荧光探针绿色制备方法 | |
Altıntıg et al. | Determination of multi element levels in leaves and herbal teas from Turkey by ICP-OES | |
Safdar et al. | Ten different brewing methods of green tea: comparative antioxidant study | |
CN103585497B (zh) | 一种竹叶中多酚的提取和检测方法 | |
CN112129745A (zh) | 一种微波消解-石墨炉原子吸收测定工业大麻加工提取物中铅含量的方法 | |
Zhang et al. | Chemical composition, nutritive value, volatile profiles and antioxidant activity of coconut (Cocos nucifera L.) haustorium with different transverse diameter | |
CN113777183A (zh) | 女贞子药材及其炮制品的特征图谱构建方法、多指标成分含量检测方法 | |
CN110346323B (zh) | 一种基于近红外光谱技术在线检测华盖散浓缩液的方法 | |
CN108456258B (zh) | 一种铁皮石斛硒多糖制备方法 | |
CN106018298A (zh) | 一种荔枝多酚的检测方法 | |
CN113759037B (zh) | 南葶苈子和/或北葶苈子配方颗粒特征图谱及其构建方法和鉴别方法 | |
CN109884219A (zh) | 白术药材uplc特征图谱的构建方法和检测方法 | |
CN109738538A (zh) | 一种鉴别天然封盖成熟蜂蜜和热加工浓缩蜂蜜的方法 | |
CN105467053B (zh) | 一种日化用品人造麝香残留快速检测方法 | |
CN113884593A (zh) | 一种判别六安瓜片茶叶等级的方法 | |
CN110353213A (zh) | 一种余甘子的制备方法 | |
CN112745398A (zh) | 一种防风多糖的提取方法 | |
CN105038298A (zh) | 一种小麦麸皮紫色素提取方法 | |
Chen et al. | Influence of Aspergillus parasiticus on aflatoxins production and quality change in Chrysanthemum morifolium at various storage conditions | |
Yanping et al. | Study on Extraction Process of Polyphenols from Actinidia | |
CN113616716B (zh) | 一种姜汁浆水制半夏饮片及其制备方法 | |
CN106974946A (zh) | 从金葵花籽中提取总黄酮的方法 | |
Stoyanova et al. | Total phenolic content and antioxidant activity of extracts obtained from tobacco waste seeds, grown under organic production |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |