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plan-spectroscopic-analysis

pjt222
Updated 6 days ago
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About

This skill helps developers plan spectroscopic analysis campaigns by guiding them through technique selection, sample preparation, and analysis sequencing. It uses a decision matrix to choose appropriate methods and sequences analyses from non-destructive to destructive. Key features include defining success criteria with cross-validation and optimizing workflow for resource constraints.

Quick Install

Claude Code

Recommended
Primary
npx skills add pjt222/agent-almanac -a claude-code
Plugin CommandAlternative
/plugin add https://github.com/pjt222/agent-almanac
Git CloneAlternative
git clone https://github.com/pjt222/agent-almanac.git ~/.claude/skills/plan-spectroscopic-analysis

Copy and paste this command in Claude Code to install this skill

Documentation

計譜析

設譜析役、擇正術、效次之、定成則含交驗策也。

  • 起未知物析、決用何術→用
  • 優析次以保樣為毀術→用
  • 取機時前計樣備→用
  • 確補術間之交驗→用
  • 限資時量機與序術→用
  • 訓新析者於系析計→用

  • :析問(構識、量、純評、官能基篩、應監)
  • :樣述(態、約量、知或疑物類)
  • :可用機與其能
  • :本與時限
  • :安資(毒、應、揮、光感)
  • :前析資(若已有)

一:定析問

擇術前明所需信:

  1. 別問型

    • 構識:定未知物全分子構。需最廣諸術
    • 構驗:驗已知物合預構。需少術、聚診特
    • 量析:定已知析物濃或量。需校與線性術 (UV-Vis、含內標 NMR)
    • 純評:定樣含雜否、若有則識之。需高靈與分能
    • 官能基篩:識何官能基存而不全構定。IR 常足
    • 應監:時追化學應進。需速與應況容 (in situ IR、Raman 或 UV-Vis)
  2. 定成則:明述何為足答。構識:「單構提合諸譜資」。量:「濃定相誤 < 5%」。

  3. 察已知:匯諸樣前資(元析、應圖、預品、文先)。此縮問減術數。

得:明析問含定成則與已知撮。

敗:問模糊(「徵此樣」)→與請者縮之。模問致散析、費機時。

二:察樣特

評樣以定何術可行:

  1. :固(晶、非晶、粉)、液、溶、氣、薄膜或生組。各態限可行樣備與術。
  2. 可用量:估全樣質或容。某術需毫克 (NMR)、他用微克 (MS) 或毫毫克 (SERS)。
  3. :試或估於常溶劑(水、甲醇、DMSO、氯仿、己烷)之溶。NMR 需氘溶;UV-Vis 需透溶。
  4. :評熱穩 (GC-MS 需揮)、光穩 (Raman 用激光)、氣/濕感 (KBr 丸備)、溶穩 (時依測)。
  5. 安險:注毒、燃、應、輻。影處則、可排某術 (如揮毒物無封不宜開氣 Raman)。
  6. 預分量範:小有機 (< 1000 Da) 對聚物/生分子 (> 1000 Da) 需異 MS 離法與 NMR 取策。

得:樣徵撮列態、量、溶、穩、險、分量範。

敗:樣不可徵 (如量太小不能試溶)→保策:始於非毀少樣術 (Raman、ATR-IR)、初果後再評。

三:以決陣擇術

按析問與樣特擇最信術:

TechniqueBest ForSample NeedsDestructive?SensitivityKey Limitations
1H NMRH connectivity, integration, coupling1--10 mg in deuterated solventNomgRequires solubility, insensitive
13C NMRCarbon skeleton, functional groups10--50 mg in deuterated solventNomgVery insensitive, long acquisition
2D NMRFull connectivity, stereochemistry5--20 mg in deuterated solventNomgHours of instrument time
IR (ATR)Functional group IDAny solid/liquid, minimal prepNougWater interference, fingerprint overlap
IR (KBr)Functional group ID, transmission1--2 mg solid in KBr pelletNo*ugMoisture sensitive, sample mixed
RamanSymmetric modes, aqueous samplesAny state, no prep for solidsNoug--mgFluorescence, photodegradation
EI-MSVolatile small molecules, fragmentationug, must be volatileYes (GC-MS)ng--ugRequires volatility
ESI-MSPolar/large molecules, MW determinationSolution in volatile solventYespg--ngAdduct complexity, ion suppression
MALDI-MSPolymers, proteins, large moleculesSolid + matrixYesfmolMatrix interference below 500 Da
UV-VisChromophores, quantitationSolution, ug--mgNougLimited structural information

*IR with KBr is non-destructive to the molecule but the sample cannot be easily recovered from the pellet.

  1. 配問於術:構識常需 NMR + MS + IR 至少。官能基篩唯需 IR。量於 UV-Vis 或 NMR 最佳。
  2. 察可行:對候術與步二樣特。除不容(如非揮物之 GC-MS、順磁樣之 NMR)。
  3. 按信密序:餘術按答此問之信量序之。
  4. 計本與供:諸術同信→擇速、廉、易得者。

得:選術序列含各擇由與排術之由。

敗:無單術足(構識常然)→計含補術合答問。無適術→注限、薦他析徑(如衍化使樣宜 GC-MS)。

四:各術計樣備

各擇術定備需:

  1. NMR 備:1--50 mg 樣溶於 0.5--0.7 mL 氘溶。按溶與譜窗擇溶劑:
Solvent1H ResidualUse When
CDCl37.26 ppmNon-polar to moderately polar compounds
DMSO-d62.50 ppmPolar compounds, broad solubility
D2O4.79 ppmWater-soluble compounds, peptides
CD3OD3.31 ppmPolar organic compounds
C6D67.16 ppmAromatic region overlap avoidance
  1. IR 備:按樣態擇法:

    • ATR:固或液直置晶上。最速、備少
    • KBr 丸:磨 1--2 mg 樣於 100--200 mg 乾 KBr、壓為透盤
    • 溶池:溶於 IR 透溶(CCl4、CS2)。透窗有限
    • 薄膜:自溶澆於 NaCl 或 KBr 窗。宜聚物、油
  2. MS 備:配離法於樣:

    • EI (GC-MS):樣需揮。溶於揮溶(二氯甲烷、己烷)
    • ESI (LC-MS):溶於 ESI 容溶(甲醇/水、乙腈/水含 0.1% 甲酸)
    • MALDI:與適矩 (DHB、CHCA、芥酸) 混、乾於靶板
  3. UV-Vis 備:溶於 UV 透溶。調濃使 lambda-max 吸於 0.1 至 1.0 間。樣參用配池。

  4. Raman 備:多樣需備少。固可裸測。液於玻管(玻 Raman 散弱)。避螢容。水溶 Raman 行(水 Raman 散弱)。

得:各擇術之備則含溶擇、需量、特處。

敗:樣不足諸計術→按步三信序序。樣於諸適溶皆不溶→計固態術 (ATR-IR、Raman、固 NMR、MALDI-MS)。

五:定析序與交驗策

序析以保樣與最大信流:

  1. 按毀性序:非毀術先、毀術末。

    • 首層 (非毀、無備):Raman、ATR-IR
    • 次層 (非毀、需備):UV-Vis、NMR (樣常可蒸溶劑回收)
    • 末層 (毀或耗樣):MS (ESI、EI/GC-MS、MALDI)
  2. 信流:用早果精晚析:

    • IR/Raman 官能基資助擇佳 NMR 驗(如 IR 無羰→略羰聚 13C 析)
    • MS 分式助釋 NMR(積比、預峰數)
    • NMR 連資助釋 MS 碎
  3. 定交驗點:識諸術果當合處:

    • 分式:MS(分子離)必合 NMR(H、C 數)與元析
    • 官能基:IR 析配當合 NMR 化位與 MS 碎
    • 不飽和度:自式(MS)算當合所察環與雙鍵(NMR、UV-Vis)
  4. 計變:定初果模時當行何加驗:

    • NMR 示未期繁→行 2D 驗 (COSY、HSQC、HMBC)
    • MS 分子離模→試他離法或求 HRMS
    • IR 為一官能基所主→試 Raman 補
  5. 記計:書析計含術序、樣備、預返時、變驗決點。

得:完序析計含備則、交驗則、變備已記。

敗:計因樣或機限不可成→明記限、提最佳可行子集。

  • 析問明定含明成則
  • 樣特已察(態、量、溶、穩、險)
  • 用決陣擇術、含由
  • 不可行術已識排與由
  • 各擇術之樣備已計
  • 析序自非毀至毀
  • 補術間定交驗點
  • 模果之變驗已識
  • 全樣耗已估、對可用量驗

  • 略計段:直赴最近機費樣費時。即 15 分計省數時重析
  • 習擇非需:非皆需 NMR。簡官能基驗唯需 IR。配術於問
  • 輕樣需:析中盡樣可避。前算全需加 20% 留
  • 毀術先:GC-MS 先於 NMR 則 NMR 樣需自他份。非毀先以最大每毫克信
  • 忽溶相容:DMSO-d6 NMR 樣難為 GC-MS(非揮)。諸術計溶擇
  • 無交驗策:無定查點則異術矛盾果至末釋未察

  • interpret-nmr-spectrum -- 釋按此計取之 NMR 資
  • interpret-ir-spectrum -- 釋按此計取之 IR 資
  • interpret-mass-spectrum -- 釋按此計取之 MS 資
  • interpret-uv-vis-spectrum -- 釋按此計取之 UV-Vis 資
  • interpret-raman-spectrum -- 釋按此計取之 Raman 資
  • validate-analytical-method -- 驗此計擇之量法

GitHub Repository

pjt222/agent-almanac
Path: i18n/wenyan-ultra/skills/plan-spectroscopic-analysis
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