查看“︁偏硼酸锂”︁的源代码

{{NoteTA|G1=Chemistry}}
{{Chembox
| Name=偏硼酸鋰
| Section1= {{Chembox Identifiers
| CASNo= 13453-69-5
| CASNo_Ref= {{cascite|correct|CAS}}
| ChemSpiderID = 109911
| PubChem = 123308
| EINECS = 236-631-5
}}
| Section2= {{Chembox Properties
| Formula= LiBO<sub>2</sub>
| MolarMass = 49.751
| Appearance = 白色晶體
| Density = 2.223
| MeltingPtC = 849
| Solubility = 0.89 g/100 mL (0 °C) <br> 2.57 g/100 mL (20 °C) <br> 11.8 g/100 mL (80 °C)
| SolubleOther = 溶於[[乙醇]]
}}
| Section3 = {{Chembox Structure
| CrystalStruct = [[单斜晶系|單斜晶系]]
}}
| Section4 = {{Chembox Thermochemistry
| DeltaHf = -1022 kJ/mol
| DeltaHc = 33.9 kJ/mol
| DeltaGf =
| Entropy = 51.3 J/mol K
| HeatCapacity = 59.8 J/mol K
}}
|Section7={{Chembox Hazards
| ExternalSDS = [http://hazard.com/msds/mf/baker/baker/files/l6600.htm External MSDS]
| GHSPictograms = {{GHS05}} {{GHS07}} {{GHS08}}
| NFPA-H = 2
| NFPA-R = 0
| NFPA-F = 0
}}
}}
'''偏硼酸鋰'''(化學式︰LiBO<sub>2</sub>)，是一種實驗室分析用的[[助熔劑]]。
==簡介== 
偏硼酸鋰的[[空間群]]是P2<sub>1</sub>/c，即屬於[[单斜晶系|單斜晶系]]。[[晶胞參數]]為a=5.85(8)Å， b=4.35(7)Å，c=6.46(6)Å，β=115.1(5)°， Z = 4。<ref name = "n1">{{Cite web |url = https://patents.google.com/patent/CN106917139A/zh |title = 偏硼酸锂晶体的制备方法和用途 |access-date = 2022-03-18 |archive-date = 2022-05-14 |archive-url = https://web.archive.org/web/20220514011317/https://patents.google.com/patent/CN106917139A/zh }}潘世烈、陈幸龙、张方方、侯雪玲．偏硼酸锂晶体的制备方法和用途︰中國.CN106917139B.2015-12-24．</ref>

==製備==
製備偏硼酸鋰晶體可采用[[助溶劑法]]。先將[[硼化物|硼化合物]]和[[鋰化合物]]混合，加入[[助熔劑]]。平緩地把溶液升温至温度600°C，然後冷卻，[[结晶|結晶]]後獲得偏硼酸鋰的晶種。再次把溶液加熱，並放置晶種於溶液重新溶化。最後混合物達室温製成大偏硼酸鋰晶體。例如：
:<chem> Li2O + B2O3 = 2 LiBO2 </chem><ref name = "n1"/><br> 或<br>
<chem> LiOH + H3BO3 = LiBO2 + 2 H2O ^ </chem>

==應用==
[[熔融]]狀的偏硼酸鋰，可完全分解[[鎢礦|鎢]][[钼|鉬]]礦石。<ref>{{Cite journal|author = 王力强，王家松，魏双，郑智慷，吴良英，张楠，曾江萍|url = http://en.cgsjournals.com/zgdzdcqkw-data/ykcs/2021/5/PDF/yk202103190040.pdf|title = 偏硼酸锂熔融 电感耦合等离子体发射光谱法测定钨钼矿石中钨钼及11种伴生元素|journal = 岩矿测试|year = 2021年9月|volume = Vol.40|access-date = 2022-03-18|archive-date = 2022-04-22|archive-url = https://web.archive.org/web/20220422130621/http://en.cgsjournals.com/zgdzdcqkw-data/ykcs/2021/5/PDF/yk202103190040.pdf}}</ref>
將[[Li2B4O7|Li<sub>2</sub>B<sub>4</sub>O<sub>7]]</sub>與偏硼酸鋰以一比四混合。此溶液可溶解[[硅酸铝|矽酸鋁]]、[[碳化硅]]、[[碳化硼]] 等。或將[[Li2B4O7|Li<sub>2</sub>B<sub>4</sub>O<sub>7]]</sub>與偏硼酸鋰以一比一混合，即可溶解鉻礦。 <ref>{{Cite book|author = Thomoas R. Dulski|title = A Manual for the Chemical Analysis of Metals|language = en|ISBN = 0 8031 2066 4|url = https://books.google.com/books?id=CX1GwLBhkC4C&pg=PA70&dq=lithium+metaborate&hl=zh-TW&sa=X&ved=2ahUKEwjviIaBnNH2AhWCNaYKHfFHAC0Q6AF6BAgGEAI#v=onepage&q=lithium%20metaborate&f=false|access-date = 2022-03-19|archive-date = 2022-05-14|archive-url = https://web.archive.org/web/20220514011317/https://books.google.com/books?id=CX1GwLBhkC4C&pg=PA70&dq=lithium+metaborate&hl=zh-TW&sa=X&ved=2ahUKEwjviIaBnNH2AhWCNaYKHfFHAC0Q6AF6BAgGEAI#v=onepage&q=lithium%20metaborate&f=false}}</ref>
此外，偏硼酸鋰可用作[[光譜緩衝劑]]，以減少在[[光谱分析|光譜分析]]時的干擾，且不會造成光[[散射]]。<ref name="n3">{{Cite book|author = B.J.Alloway|title = Heavy Metals in Solid|language = en|ISBN = 0 7514 0198 6|url = https://books.google.com/books?id=ViOMjoLKB1gC&pg=PA86&dq=lithium+metaborate&hl=zh-TW&sa=X&redir_esc=y#v=onepage&q=lithium%20metaborate&f=false|access-date = 2022-03-19|archive-date = 2022-05-14|archive-url = https://web.archive.org/web/20220514011317/https://books.google.com/books?id=ViOMjoLKB1gC&pg=PA86&dq=lithium+metaborate&hl=zh-TW&sa=X&redir_esc=y#v=onepage&q=lithium%20metaborate&f=false}}</ref> 
偏硼酸鋰也可幫助[[X射线荧光光谱仪|X射線螢光光譜儀]]作不同化合物的分析。<ref>{{Cite web|url =https://www.xrfscientific.com/lithium-metaborate-xrf-sample-preparation/|title =Using Lithium Metaborate XRF Sample Preparation|3 =|access-date =2022-03-19|archive-date =2022-05-14|archive-url =https://web.archive.org/web/20220514011318/https://www.xrfscientific.com/lithium-metaborate-xrf-sample-preparation/}}</ref>
==缺點==
加入偏硼酸鋰後的溶液會含高鹽量，增加[[光谱仪|光譜儀]]背景信號，導致如[[電感耦合電漿體原子發射光譜|ICP-OES]]的靈敏度下降，[[偵測極限]]上升，所以誤差更大。<ref name="n3"/>
                                                                                                                                 
==參考文獻==
{{reflist}}

[[Category:锂化合物]]
[[Category:硼酸盐]]